3.7.0.1 html 1023 782 1 true 140 0 false 4 false false R1.htm 000 - Document - Document And Entity Information Sheet http://www.bmtc.com/20161231/role/statement-document-and-entity-information Document And Entity Information Cover 1 false false R2.htm 001 - Statement - Consolidated Balance Sheets Sheet http://www.bmtc.com/20161231/role/statement-consolidated-balance-sheets- Consolidated Balance Sheets Statements 2 false false R3.htm 002 - Statement - Consolidated Balance Sheets (Parentheticals) Sheet http://www.bmtc.com/20161231/role/statement-consolidated-balance-sheets-parentheticals Consolidated Balance Sheets (Parentheticals) Statements 3 false false R4.htm 003 - Statement - Consolidated Statements of Income Sheet http://www.bmtc.com/20161231/role/statement-consolidated-statements-of-income- Consolidated Statements of Income Statements 4 false false R5.htm 004 - Statement - Consolidated Statements of Comprehensive Income Sheet http://www.bmtc.com/20161231/role/statement-consolidated-statements-of-comprehensive-income Consolidated Statements of Comprehensive Income Statements 5 false false R6.htm 005 - Statement - Consolidated Statements of Comprehensive Income (Parentheticals) Sheet http://www.bmtc.com/20161231/role/statement-consolidated-statements-of-comprehensive-income-parentheticals Consolidated Statements of Comprehensive Income (Parentheticals) Statements 6 false false R7.htm 006 - Statement - Consolidated Statements of Cash Flows Sheet http://www.bmtc.com/20161231/role/statement-consolidated-statements-of-cash-flows- Consolidated Statements of Cash Flows Statements 7 false false R8.htm 007 - Statement - Consolidated Statements of Changes in Shareholders' Equity Sheet http://www.bmtc.com/20161231/role/statement-consolidated-statements-of-changes-in-shareholders-equity Consolidated Statements of Changes in Shareholders' Equity Statements 8 false false R9.htm 008 - Statement - Consolidated Statements of Changes in Shareholders' Equity (Parentheticals) Sheet http://www.bmtc.com/20161231/role/statement-consolidated-statements-of-changes-in-shareholders-equity-parentheticals Consolidated Statements of Changes in Shareholders' Equity (Parentheticals) Statements 9 false false R10.htm 009 - Disclosure - Note 1 - Summary of Significant Accounting Policies Sheet http://www.bmtc.com/20161231/role/statement-note-1-summary-of-significant-accounting-policies Note 1 - Summary of Significant Accounting Policies Notes 10 false false R11.htm 010 - Disclosure - Note 2 - Business Combinations Sheet http://www.bmtc.com/20161231/role/statement-note-2-business-combinations Note 2 - Business Combinations Notes 11 false false R12.htm 011 - Disclosure - Note 3 - Goodwill and Other Intangible Assets Sheet http://www.bmtc.com/20161231/role/statement-note-3-goodwill-and-other-intangible-assets Note 3 - Goodwill and Other Intangible Assets Notes 12 false false R13.htm 012 - Disclosure - Note 4 - Investment Securities Sheet http://www.bmtc.com/20161231/role/statement-note-4-investment-securities Note 4 - Investment Securities Notes 13 false false R14.htm 013 - Disclosure - Note 5 - Loans and Leases Sheet http://www.bmtc.com/20161231/role/statement-note-5-loans-and-leases Note 5 - Loans and Leases Notes 14 false false R15.htm 014 - Disclosure - Note 6 - Other Real Estate Owned Sheet http://www.bmtc.com/20161231/role/statement-note-6-other-real-estate-owned Note 6 - Other Real Estate Owned Notes 15 false false R16.htm 015 - Disclosure - Note 7 - Premises and Equipment Sheet http://www.bmtc.com/20161231/role/statement-note-7-premises-and-equipment Note 7 - Premises and Equipment Notes 16 false false R17.htm 016 - Disclosure - Note 8 - Mortgage Servicing Rights ("MSR"s) Sheet http://www.bmtc.com/20161231/role/statement-note-8-mortgage-servicing-rights-msrs Note 8 - Mortgage Servicing Rights ("MSR"s) Notes 17 false false R18.htm 017 - Disclosure - Note 9 - Deposits Sheet http://www.bmtc.com/20161231/role/statement-note-9-deposits Note 9 - Deposits Notes 18 false false R19.htm 018 - Disclosure - Note 10 - Short-term Borrowings and Long-term FHLB Advances Sheet http://www.bmtc.com/20161231/role/statement-note-10-shortterm-borrowings-and-longterm-fhlb-advances- Note 10 - Short-term Borrowings and Long-term FHLB Advances Notes 19 false false R20.htm 019 - Disclosure - Note 11 - Subordinated Notes Notes http://www.bmtc.com/20161231/role/statement-note-11-subordinated-notes- Note 11 - Subordinated Notes Notes 20 false false R21.htm 020 - Disclosure - Note 12 - Derivatives and Hedging Activities Sheet http://www.bmtc.com/20161231/role/statement-note-12-derivatives-and-hedging-activities Note 12 - Derivatives and Hedging Activities Notes 21 false false R22.htm 021 - Disclosure - Note 13 - Disclosure about Fair Value of Financial Instruments Sheet http://www.bmtc.com/20161231/role/statement-note-13-disclosure-about-fair-value-of-financial-instruments Note 13 - Disclosure about Fair Value of Financial Instruments Notes 22 false false R23.htm 022 - Disclosure - Note 14 - Fair Value Measurement Sheet http://www.bmtc.com/20161231/role/statement-note-14-fair-value-measurement Note 14 - Fair Value Measurement Notes 23 false false R24.htm 023 - Disclosure - Note 15 - 401(K) Plan and Other Defined Contribution Plans Sheet http://www.bmtc.com/20161231/role/statement-note-15-401k-plan-and-other-defined-contribution-plans- Note 15 - 401(K) Plan and Other Defined Contribution Plans Notes 24 false false R25.htm 024 - Disclosure - Note 16 - Pension and Postretirement Benefit Plans Sheet http://www.bmtc.com/20161231/role/statement-note-16-pension-and-postretirement-benefit-plans Note 16 - Pension and Postretirement Benefit Plans Notes 25 false false R26.htm 025 - Disclosure - Note 17 - Accumulated Other Comprehensive Loss Sheet http://www.bmtc.com/20161231/role/statement-note-17-accumulated-other-comprehensive-loss- Note 17 - Accumulated Other Comprehensive Loss Notes 26 false false R27.htm 026 - Disclosure - Note 18 - Income Taxes Sheet http://www.bmtc.com/20161231/role/statement-note-18-income-taxes Note 18 - Income Taxes Notes 27 false false R28.htm 027 - Disclosure - Note 19 - Stock-based Compensation Sheet http://www.bmtc.com/20161231/role/statement-note-19-stockbased-compensation Note 19 - Stock-based Compensation Notes 28 false false R29.htm 028 - Disclosure - Note 20 - Earnings Per Share Sheet http://www.bmtc.com/20161231/role/statement-note-20-earnings-per-share Note 20 - Earnings Per Share Notes 29 false false R30.htm 029 - Disclosure - Note 21 - Other Operating Income Sheet http://www.bmtc.com/20161231/role/statement-note-21-other-operating-income Note 21 - Other Operating Income Notes 30 false false R31.htm 030 - Disclosure - Note 22 - Other Operating Expense Sheet http://www.bmtc.com/20161231/role/statement-note-22-other-operating-expense Note 22 - Other Operating Expense Notes 31 false false R32.htm 031 - Disclosure - Note 23 - Related Party Transactions Sheet http://www.bmtc.com/20161231/role/statement-note-23-related-party-transactions Note 23 - Related Party Transactions Notes 32 false false R33.htm 032 - Disclosure - Note 24 - Financial Instruments with Off-Balance Sheet Risk, Contingencies and Concentration of Credit Risk Sheet http://www.bmtc.com/20161231/role/statement-note-24-financial-instruments-with-offbalance-sheet-risk-contingencies-and-concentration-of-credit-risk Note 24 - Financial Instruments with Off-Balance Sheet Risk, Contingencies and Concentration of Credit Risk Notes 33 false false R34.htm 033 - Disclosure - Note 25 - Dividend Restrictions Sheet http://www.bmtc.com/20161231/role/statement-note-25-dividend-restrictions- Note 25 - Dividend Restrictions Notes 34 false false R35.htm 034 - Disclosure - Note 26 - Regulatory Capital Requirements Sheet http://www.bmtc.com/20161231/role/statement-note-26-regulatory-capital-requirements Note 26 - Regulatory Capital Requirements Notes 35 false false R36.htm 035 - Disclosure - Note 27 - Selected Quarterly Financial Data (Unaudited) Sheet http://www.bmtc.com/20161231/role/statement-note-27-selected-quarterly-financial-data-unaudited Note 27 - Selected Quarterly Financial Data (Unaudited) Notes 36 false false R37.htm 036 - Disclosure - Note 28 - Parent Company - Only Financial Statements Sheet http://www.bmtc.com/20161231/role/statement-note-28-parent-company-only-financial-statements- Note 28 - Parent Company - Only Financial Statements Notes 37 false false R38.htm 037 - Document - Note 29 - Segment Information Sheet http://www.bmtc.com/20161231/role/statement-note-29-segment-information Note 29 - Segment Information Uncategorized 38 false false R39.htm 038 - Disclosure - Note 30 - Subsequent Events Sheet http://www.bmtc.com/20161231/role/statement-note-30-subsequent-events Note 30 - Subsequent Events Uncategorized 39 false false R40.htm 039 - Disclosure - Significant Accounting Policies (Policies) Sheet http://www.bmtc.com/20161231/role/statement-significant-accounting-policies-policies Significant Accounting Policies (Policies) Uncategorized 40 false false R41.htm 040 - Disclosure - Note 2 - Business Combinations (Tables) Sheet http://www.bmtc.com/20161231/role/statement-note-2-business-combinations-tables Note 2 - Business Combinations (Tables) Uncategorized 41 false false R42.htm 041 - Disclosure - Note 3 - Goodwill and Other Intangible Assets (Tables) Sheet http://www.bmtc.com/20161231/role/statement-note-3-goodwill-and-other-intangible-assets-tables Note 3 - Goodwill and Other Intangible Assets (Tables) Uncategorized 42 false false R43.htm 042 - Disclosure - Note 4 - Investment Securities (Tables) Sheet http://www.bmtc.com/20161231/role/statement-note-4-investment-securities-tables Note 4 - Investment Securities (Tables) Uncategorized 43 false false R44.htm 043 - Disclosure - Note 5 - Loans and Leases (Tables) Sheet http://www.bmtc.com/20161231/role/statement-note-5-loans-and-leases-tables Note 5 - Loans and Leases (Tables) Uncategorized 44 false false R45.htm 044 - Disclosure - Note 6 - Other Real Estate Owned (Tables) Sheet http://www.bmtc.com/20161231/role/statement-note-6-other-real-estate-owned-tables Note 6 - Other Real Estate Owned (Tables) Uncategorized 45 false false R46.htm 045 - Disclosure - Note 7 - Premises and Equipment (Tables) Sheet http://www.bmtc.com/20161231/role/statement-note-7-premises-and-equipment-tables Note 7 - Premises and Equipment (Tables) Uncategorized 46 false false R47.htm 046 - Disclosure - Note 8 - Mortgage Servicing Rights ("MSR"s) (Tables) Sheet http://www.bmtc.com/20161231/role/statement-note-8-mortgage-servicing-rights-msrs-tables Note 8 - Mortgage Servicing Rights ("MSR"s) (Tables) Uncategorized 47 false false R48.htm 047 - Disclosure - Note 9 - Deposits (Tables) Sheet http://www.bmtc.com/20161231/role/statement-note-9-deposits-tables Note 9 - Deposits (Tables) Uncategorized 48 false false R49.htm 048 - Disclosure - Note 10 - Short-term Borrowings and Long-term FHLB Advances (Tables) Sheet http://www.bmtc.com/20161231/role/statement-note-10-shortterm-borrowings-and-longterm-fhlb-advances-tables Note 10 - Short-term Borrowings and Long-term FHLB Advances (Tables) Uncategorized 49 false false R50.htm 049 - Disclosure - Note 12 - Derivatives and Hedging Activities (Tables) Sheet http://www.bmtc.com/20161231/role/statement-note-12-derivatives-and-hedging-activities-tables Note 12 - Derivatives and Hedging Activities (Tables) Uncategorized 50 false false R51.htm 050 - Disclosure - Note 13 - Disclosure about Fair Value of Financial Instruments (Tables) Sheet http://www.bmtc.com/20161231/role/statement-note-13-disclosure-about-fair-value-of-financial-instruments-tables Note 13 - Disclosure about Fair Value of Financial Instruments (Tables) Uncategorized 51 false false R52.htm 051 - Disclosure - Note 14 - Fair Value Measurement (Tables) Sheet http://www.bmtc.com/20161231/role/statement-note-14-fair-value-measurement-tables Note 14 - Fair Value Measurement (Tables) Uncategorized 52 false false R53.htm 052 - Disclosure - Note 16 - Pension and Postretirement Benefit Plans (Tables) Sheet http://www.bmtc.com/20161231/role/statement-note-16-pension-and-postretirement-benefit-plans-tables Note 16 - Pension and Postretirement Benefit Plans (Tables) Uncategorized 53 false false R54.htm 053 - Disclosure - Note 17 - Accumulated Other Comprehensive Loss (Tables) Sheet http://www.bmtc.com/20161231/role/statement-note-17-accumulated-other-comprehensive-loss-tables Note 17 - Accumulated Other Comprehensive Loss (Tables) Uncategorized 54 false false R55.htm 054 - Disclosure - Note 18 - Income Taxes (Tables) Sheet http://www.bmtc.com/20161231/role/statement-note-18-income-taxes-tables Note 18 - Income Taxes (Tables) Uncategorized 55 false false R56.htm 055 - Disclosure - Note 19 - Stock-based Compensation (Tables) Sheet http://www.bmtc.com/20161231/role/statement-note-19-stockbased-compensation-tables Note 19 - Stock-based Compensation (Tables) Uncategorized 56 false false R57.htm 056 - Disclosure - Note 20 - Earnings Per Share (Tables) Sheet http://www.bmtc.com/20161231/role/statement-note-20-earnings-per-share-tables Note 20 - Earnings Per Share (Tables) Uncategorized 57 false false R58.htm 057 - Disclosure - Note 21 - Other Operating Income (Tables) Sheet http://www.bmtc.com/20161231/role/statement-note-21-other-operating-income-tables Note 21 - Other Operating Income (Tables) Uncategorized 58 false false R59.htm 058 - Disclosure - Note 22 - Other Operating Expense (Tables) Sheet http://www.bmtc.com/20161231/role/statement-note-22-other-operating-expense-tables Note 22 - Other Operating Expense (Tables) Uncategorized 59 false false R60.htm 059 - Disclosure - Note 23 - Related Party Transactions (Tables) Sheet http://www.bmtc.com/20161231/role/statement-note-23-related-party-transactions-tables Note 23 - Related Party Transactions (Tables) Uncategorized 60 false false R61.htm 060 - Disclosure - Note 26 - Regulatory Capital Requirements (Tables) Sheet http://www.bmtc.com/20161231/role/statement-note-26-regulatory-capital-requirements-tables Note 26 - Regulatory Capital Requirements (Tables) Uncategorized 61 false false R62.htm 061 - Disclosure - Note 27 - Selected Quarterly Financial Data (Unaudited) (Tables) Sheet http://www.bmtc.com/20161231/role/statement-note-27-selected-quarterly-financial-data-unaudited-tables Note 27 - Selected Quarterly Financial Data (Unaudited) (Tables) Uncategorized 62 false false R63.htm 062 - Disclosure - Note 28 - Parent Company - Only Financial Statements (Tables) Sheet http://www.bmtc.com/20161231/role/statement-note-28-parent-company-only-financial-statements-tables Note 28 - Parent Company - Only Financial Statements (Tables) Uncategorized 63 false false R64.htm 063 - Disclosure - Note 29 - Segment Information (Tables) Sheet http://www.bmtc.com/20161231/role/statement-note-29-segment-information-tables Note 29 - Segment Information (Tables) Uncategorized 64 false false R65.htm 064 - Disclosure - Note 1 - Summary of Significant Accounting Policies (Details Textual) Sheet http://www.bmtc.com/20161231/role/statement-note-1-summary-of-significant-accounting-policies-details-textual Note 1 - Summary of Significant Accounting Policies (Details Textual) Uncategorized 65 false false R66.htm 065 - Disclosure - Note 2 - Business Combinations (Details Textual) Sheet http://www.bmtc.com/20161231/role/statement-note-2-business-combinations-details-textual Note 2 - Business Combinations (Details Textual) Uncategorized 66 false false R67.htm 066 - Disclosure - Note 2 - Business Combinations - Consideration Paid and Fair Value of Identifiable Assets Acquired and Liabilities Assumed (Details) Sheet http://www.bmtc.com/20161231/role/statement-note-2-business-combinations-consideration-paid-and-fair-value-of-identifiable-assets-acquired-and-liabilities-assumed-details Note 2 - Business Combinations - Consideration Paid and Fair Value of Identifiable Assets Acquired and Liabilities Assumed (Details) Uncategorized 67 false false R68.htm 067 - Disclosure - Note 2 - Business Combinations - Consideration Paid and Fair Value of Identifiable Assets Acquired and Liabilities Assumed (Details) (Parentheticals) Sheet http://www.bmtc.com/20161231/role/statement-note-2-business-combinations-consideration-paid-and-fair-value-of-identifiable-assets-acquired-and-liabilities-assumed-details-parentheticals Note 2 - Business Combinations - Consideration Paid and Fair Value of Identifiable Assets Acquired and Liabilities Assumed (Details) (Parentheticals) Uncategorized 68 false false R69.htm 068 - Disclosure - Note 2 - Business Combinations - Pro Forma Income Statements (Details) Sheet http://www.bmtc.com/20161231/role/statement-note-2-business-combinations-pro-forma-income-statements-details Note 2 - Business Combinations - Pro Forma Income Statements (Details) Uncategorized 69 false false R70.htm 069 - Disclosure - Note 2 - Business Combinations - Costs Identified and Due Diligence, Merger-related and Merger Integration Costs (Details) Sheet http://www.bmtc.com/20161231/role/statement-note-2-business-combinations-costs-identified-and-due-diligence-mergerrelated-and-merger-integration-costs-details Note 2 - Business Combinations - Costs Identified and Due Diligence, Merger-related and Merger Integration Costs (Details) Uncategorized 70 false false R71.htm 070 - Disclosure - Note 3 - Goodwill and Other Intangible Assets (Details Textual) Sheet http://www.bmtc.com/20161231/role/statement-note-3-goodwill-and-other-intangible-assets-details-textual Note 3 - Goodwill and Other Intangible Assets (Details Textual) Uncategorized 71 false false R72.htm 071 - Disclosure - Note 3 - Goodwill and Other Intangible Assets - Goodwill and Intangible Assets Related to Acquisitions (Details) Sheet http://www.bmtc.com/20161231/role/statement-note-3-goodwill-and-other-intangible-assets-goodwill-and-intangible-assets-related-to-acquisitions-details Note 3 - Goodwill and Other Intangible Assets - Goodwill and Intangible Assets Related to Acquisitions (Details) Uncategorized 72 false false R73.htm 072 - Disclosure - Note 4 - Investment Securities (Details Textual) Sheet http://www.bmtc.com/20161231/role/statement-note-4-investment-securities-details-textual Note 4 - Investment Securities (Details Textual) Uncategorized 73 false false R74.htm 073 - Disclosure - Note 4 - Investment Securities - Amortized Cost and Fair Value of Available for Sale Investment Securities (Details) Sheet http://www.bmtc.com/20161231/role/statement-note-4-investment-securities-amortized-cost-and-fair-value-of-available-for-sale-investment-securities-details Note 4 - Investment Securities - Amortized Cost and Fair Value of Available for Sale Investment Securities (Details) Uncategorized 74 false false R75.htm 074 - Disclosure - Note 4 - Investment Securities - Amount of Investment Securities Available for Sale in Unrealized Loss Position (Details) Sheet http://www.bmtc.com/20161231/role/statement-note-4-investment-securities-amount-of-investment-securities-available-for-sale-in-unrealized-loss-position-details Note 4 - Investment Securities - Amount of Investment Securities Available for Sale in Unrealized Loss Position (Details) Uncategorized 75 false false R76.htm 075 - Disclosure - Note 4 - Investment Securities - Investment Securities Available for Sale Classified by Contractual Maturity (Details) Sheet http://www.bmtc.com/20161231/role/statement-note-4-investment-securities-investment-securities-available-for-sale-classified-by-contractual-maturity-details Note 4 - Investment Securities - Investment Securities Available for Sale Classified by Contractual Maturity (Details) Uncategorized 76 false false R77.htm 076 - Disclosure - Note 4 - Investment Securities - Amortized Cost and Fair Value of Held to Maturity Investment Securities (Details) Sheet http://www.bmtc.com/20161231/role/statement-note-4-investment-securities-amortized-cost-and-fair-value-of-held-to-maturity-investment-securities-details Note 4 - Investment Securities - Amortized Cost and Fair Value of Held to Maturity Investment Securities (Details) Uncategorized 77 false false R78.htm 077 - Disclosure - Note 4 - Investment Securities - Amount of Investment Securities Held to Maturity in Unrealized Loss Position (Details) Sheet http://www.bmtc.com/20161231/role/statement-note-4-investment-securities-amount-of-investment-securities-held-to-maturity-in-unrealized-loss-position-details Note 4 - Investment Securities - Amount of Investment Securities Held to Maturity in Unrealized Loss Position (Details) Uncategorized 78 false false R79.htm 078 - Disclosure - Note 4 - Investment Securities - Investment Securities Held to Maturity Classified by Contractual Maturity (Details) Sheet http://www.bmtc.com/20161231/role/statement-note-4-investment-securities-investment-securities-held-to-maturity-classified-by-contractual-maturity-details Note 4 - Investment Securities - Investment Securities Held to Maturity Classified by Contractual Maturity (Details) Uncategorized 79 false false R80.htm 079 - Disclosure - Note 5 - Loans and Leases (Details Textual) Sheet http://www.bmtc.com/20161231/role/statement-note-5-loans-and-leases-details-textual Note 5 - Loans and Leases (Details Textual) Uncategorized 80 false false R81.htm 080 - Disclosure - Note 5 - Loans and Leases - Corporations Portfolio Loans and Leases (Details) Sheet http://www.bmtc.com/20161231/role/statement-note-5-loans-and-leases-corporations-portfolio-loans-and-leases-details Note 5 - Loans and Leases - Corporations Portfolio Loans and Leases (Details) Uncategorized 81 false false R82.htm 081 - Disclosure - Note 5 - Loans and Leases - Components of Net Investments in Leases (Details) Sheet http://www.bmtc.com/20161231/role/statement-note-5-loans-and-leases-components-of-net-investments-in-leases-details Note 5 - Loans and Leases - Components of Net Investments in Leases (Details) Uncategorized 82 false false R83.htm 082 - Disclosure - Note 5 - Loans and Leases - Non-performing Loans and Leases (Details) Sheet http://www.bmtc.com/20161231/role/statement-note-5-loans-and-leases-nonperforming-loans-and-leases-details Note 5 - Loans and Leases - Non-performing Loans and Leases (Details) Uncategorized 83 false false R84.htm 083 - Disclosure - Note 5 - Loans and Leases - Outstanding Principal Balance and Related Carrying Amount of Credit-Impaired Loans (Details) Sheet http://www.bmtc.com/20161231/role/statement-note-5-loans-and-leases-outstanding-principal-balance-and-related-carrying-amount-of-creditimpaired-loans-details Note 5 - Loans and Leases - Outstanding Principal Balance and Related Carrying Amount of Credit-Impaired Loans (Details) Uncategorized 84 false false R85.htm 084 - Disclosure - Note 5 - Loans and Leases - Changes in Accretable Discount on Purchased Credit-impaired Loans (Details) Sheet http://www.bmtc.com/20161231/role/statement-note-5-loans-and-leases-changes-in-accretable-discount-on-purchased-creditimpaired-loans-details Note 5 - Loans and Leases - Changes in Accretable Discount on Purchased Credit-impaired Loans (Details) Uncategorized 85 false false R86.htm 085 - Disclosure - Note 5 - Loans and Leases - Aging of All Portfolio Loans and Leases (Details) Sheet http://www.bmtc.com/20161231/role/statement-note-5-loans-and-leases-aging-of-all-portfolio-loans-and-leases-details Note 5 - Loans and Leases - Aging of All Portfolio Loans and Leases (Details) Uncategorized 86 false false R87.htm 086 - Disclosure - Note 5 - Loans and Leases - Roll-forward of Allowance for Loan and Leases Losses by Loan Category (Details) Sheet http://www.bmtc.com/20161231/role/statement-note-5-loans-and-leases-rollforward-of-allowance-for-loan-and-leases-losses-by-loan-category-details Note 5 - Loans and Leases - Roll-forward of Allowance for Loan and Leases Losses by Loan Category (Details) Uncategorized 87 false false R88.htm 087 - Disclosure - Note 5 - Loans and Leases - Allocation of Allowance for Loan and Lease Losses by Portfolio Segment Based on Methodology Used to Evaluate Loans and Leases for Impairment (Details) Sheet http://www.bmtc.com/20161231/role/statement-note-5-loans-and-leases-allocation-of-allowance-for-loan-and-lease-losses-by-portfolio-segment-based-on-methodology-used-to-evaluate-loans-and-leases-for-impairment-details Note 5 - Loans and Leases - Allocation of Allowance for Loan and Lease Losses by Portfolio Segment Based on Methodology Used to Evaluate Loans and Leases for Impairment (Details) Uncategorized 88 false false R89.htm 088 - Disclosure - Note 5 - Loans and Leases - Carrying Value for all Portfolio Loans and Leases by Portfolio Segment Based on Methodology Used to Evaluate Loans and Leases for Impairment (Details) Sheet http://www.bmtc.com/20161231/role/statement-note-5-loans-and-leases-carrying-value-for-all-portfolio-loans-and-leases-by-portfolio-segment-based-on-methodology-used-to-evaluate-loans-and-leases-for-impairment-details Note 5 - Loans and Leases - Carrying Value for all Portfolio Loans and Leases by Portfolio Segment Based on Methodology Used to Evaluate Loans and Leases for Impairment (Details) Uncategorized 89 false false R90.htm 089 - Disclosure - Note 5 - Loans and Leases - Carrying Value of all Portfolio Loans and Leases by Portfolio Segment Based on Credit Risk Profile by Internally Assigned Grade (Details) Sheet http://www.bmtc.com/20161231/role/statement-note-5-loans-and-leases-carrying-value-of-all-portfolio-loans-and-leases-by-portfolio-segment-based-on-credit-risk-profile-by-internally-assigned-grade-details Note 5 - Loans and Leases - Carrying Value of all Portfolio Loans and Leases by Portfolio Segment Based on Credit Risk Profile by Internally Assigned Grade (Details) Uncategorized 90 false false R91.htm 090 - Disclosure - Note 5 - Loans and Leases - Carrying Value of all Portfolio Loans and Leases by Portfolio Segment Based on Credit Risk Profile by Payment Activity (Details) Sheet http://www.bmtc.com/20161231/role/statement-note-5-loans-and-leases-carrying-value-of-all-portfolio-loans-and-leases-by-portfolio-segment-based-on-credit-risk-profile-by-payment-activity-details Note 5 - Loans and Leases - Carrying Value of all Portfolio Loans and Leases by Portfolio Segment Based on Credit Risk Profile by Payment Activity (Details) Uncategorized 91 false false R92.htm 091 - Disclosure - Note 5 - Loans and Leases - Balance of Troubled Debt Restructurings (Details) Sheet http://www.bmtc.com/20161231/role/statement-note-5-loans-and-leases-balance-of-troubled-debt-restructurings-details Note 5 - Loans and Leases - Balance of Troubled Debt Restructurings (Details) Uncategorized 92 false false R93.htm 092 - Disclosure - Note 5 - Loans and Leases - Loan and Lease Modifications Categorized as Troubled Debt Restructurings (Details) Sheet http://www.bmtc.com/20161231/role/statement-note-5-loans-and-leases-loan-and-lease-modifications-categorized-as-troubled-debt-restructurings-details Note 5 - Loans and Leases - Loan and Lease Modifications Categorized as Troubled Debt Restructurings (Details) Uncategorized 93 false false R94.htm 093 - Disclosure - Note 5 - Loans and Leases - Recorded Investment and Principal Balance of Impaired Loans by Portfolio Segment Their Related Allowance and Interest Income Recognized (Details) Sheet http://www.bmtc.com/20161231/role/statement-note-5-loans-and-leases-recorded-investment-and-principal-balance-of-impaired-loans-by-portfolio-segment-their-related-allowance-and-interest-income-recognized-details Note 5 - Loans and Leases - Recorded Investment and Principal Balance of Impaired Loans by Portfolio Segment Their Related Allowance and Interest Income Recognized (Details) Uncategorized 94 false false R95.htm 094 - Disclosure - Note 5 - Loans and Leases - Loan Acquired (Details) Sheet http://www.bmtc.com/20161231/role/statement-note-5-loans-and-leases-loan-acquired-details Note 5 - Loans and Leases - Loan Acquired (Details) Uncategorized 95 false false R96.htm 095 - Disclosure - Note 6 - Other Real Estate Owned (Details) Sheet http://www.bmtc.com/20161231/role/statement-note-6-other-real-estate-owned-details Note 6 - Other Real Estate Owned (Details) Uncategorized 96 false false R97.htm 096 - Disclosure - Note 7 - Premises and Equipment (Details Textual) Sheet http://www.bmtc.com/20161231/role/statement-note-7-premises-and-equipment-details-textual Note 7 - Premises and Equipment (Details Textual) Uncategorized 97 false false R98.htm 097 - Disclosure - Note 7 - Premises and Equipment - Summary of Premises and Equipment (Details) Sheet http://www.bmtc.com/20161231/role/statement-note-7-premises-and-equipment-summary-of-premises-and-equipment-details Note 7 - Premises and Equipment - Summary of Premises and Equipment (Details) Uncategorized 98 false false R99.htm 098 - Disclosure - Note 7 - Premises and Equipment - Future Minimum Cash Rent Commitments under Various Operating Leases (Details) Sheet http://www.bmtc.com/20161231/role/statement-note-7-premises-and-equipment-future-minimum-cash-rent-commitments-under-various-operating-leases-details Note 7 - Premises and Equipment - Future Minimum Cash Rent Commitments under Various Operating Leases (Details) Uncategorized 99 false false R100.htm 099 - Disclosure - Note 8 - Mortgage Servicing Rights ("MSR"s) (Details Textual) Sheet http://www.bmtc.com/20161231/role/statement-note-8-mortgage-servicing-rights-msrs-details-textual Note 8 - Mortgage Servicing Rights ("MSR"s) (Details Textual) Uncategorized 100 false false R101.htm 100 - Disclosure - Note 8 - Mortgage Servicing Rights ("MSR"s) - Summary of Activity Related to Mortgage Servicing Rights (Details) Sheet http://www.bmtc.com/20161231/role/statement-note-8-mortgage-servicing-rights-msrs-summary-of-activity-related-to-mortgage-servicing-rights-details Note 8 - Mortgage Servicing Rights ("MSR"s) - Summary of Activity Related to Mortgage Servicing Rights (Details) Uncategorized 101 false false R102.htm 101 - Disclosure - Note 8 - Mortgage Servicing Rights ("MSR"s) - Summarized Corporation's Activity Related to Changes in Impairment Valuation Allowance of MSRs (Details) Sheet http://www.bmtc.com/20161231/role/statement-note-8-mortgage-servicing-rights-msrs-summarized-corporations-activity-related-to-changes-in-impairment-valuation-allowance-of-msrs-details Note 8 - Mortgage Servicing Rights ("MSR"s) - Summarized Corporation's Activity Related to Changes in Impairment Valuation Allowance of MSRs (Details) Uncategorized 102 false false R103.htm 102 - Disclosure - Note 8 - Mortgage Servicing Rights ("MSR"s) - Summary of Key Economic Assumptions and Sensitivity of Current Fair Value of MSRs (Details) Sheet http://www.bmtc.com/20161231/role/statement-note-8-mortgage-servicing-rights-msrs-summary-of-key-economic-assumptions-and-sensitivity-of-current-fair-value-of-msrs-details Note 8 - Mortgage Servicing Rights ("MSR"s) - Summary of Key Economic Assumptions and Sensitivity of Current Fair Value of MSRs (Details) Uncategorized 103 false false R104.htm 103 - Disclosure - Note 9 - Deposits (Details Textual) Sheet http://www.bmtc.com/20161231/role/statement-note-9-deposits-details-textual Note 9 - Deposits (Details Textual) Uncategorized 104 false false R105.htm 104 - Disclosure - Note 9 - Deposits - Components of Deposits (Details) Sheet http://www.bmtc.com/20161231/role/statement-note-9-deposits-components-of-deposits-details Note 9 - Deposits - Components of Deposits (Details) Uncategorized 105 false false R106.htm 105 - Disclosure - Note 9 - Deposits - Details of Maturities of Retail Time Deposits (Details) Sheet http://www.bmtc.com/20161231/role/statement-note-9-deposits-details-of-maturities-of-retail-time-deposits-details Note 9 - Deposits - Details of Maturities of Retail Time Deposits (Details) Uncategorized 106 false false R107.htm 106 - Disclosure - Note 9 - Deposits - Details of Maturities of Wholesale Time Deposits (Details) Sheet http://www.bmtc.com/20161231/role/statement-note-9-deposits-details-of-maturities-of-wholesale-time-deposits-details Note 9 - Deposits - Details of Maturities of Wholesale Time Deposits (Details) Uncategorized 107 false false R108.htm 107 - Disclosure - Note 10 - Short-term Borrowings and Long-term FHLB Advances (Details Textual) Sheet http://www.bmtc.com/20161231/role/statement-note-10-shortterm-borrowings-and-longterm-fhlb-advances-details-textual Note 10 - Short-term Borrowings and Long-term FHLB Advances (Details Textual) Uncategorized 108 false false R109.htm 108 - Disclosure - Note 10 - Short-term Borrowings and Long-term FHLB Advances - Summary of Short-term Borrowings (Details) Sheet http://www.bmtc.com/20161231/role/statement-note-10-shortterm-borrowings-and-longterm-fhlb-advances-summary-of-shortterm-borrowings-details Note 10 - Short-term Borrowings and Long-term FHLB Advances - Summary of Short-term Borrowings (Details) Uncategorized 109 false false R110.htm 109 - Disclosure - Note 10 - Short-term Borrowings and Long-term FHLB Advances - Information Concerning Short-term Borrowings (Details) Sheet http://www.bmtc.com/20161231/role/statement-note-10-shortterm-borrowings-and-longterm-fhlb-advances-information-concerning-shortterm-borrowings-details Note 10 - Short-term Borrowings and Long-term FHLB Advances - Information Concerning Short-term Borrowings (Details) Uncategorized 110 false false R111.htm 110 - Disclosure - Note 10 - Short-term Borrowings and Long-term FHLB Advances - Maturity of FHLB Advances and Other Borrowings (Details) Sheet http://www.bmtc.com/20161231/role/statement-note-10-shortterm-borrowings-and-longterm-fhlb-advances-maturity-of-fhlb-advances-and-other-borrowings-details Note 10 - Short-term Borrowings and Long-term FHLB Advances - Maturity of FHLB Advances and Other Borrowings (Details) Uncategorized 111 false false R112.htm 111 - Disclosure - Note 10 - Short-term Borrowings and Long-term FHLB Advances - Rate and Maturity Information on Federal Home Loan Bank Advances and Other Borrowings (Details) Sheet http://www.bmtc.com/20161231/role/statement-note-10-shortterm-borrowings-and-longterm-fhlb-advances-rate-and-maturity-information-on-federal-home-loan-bank-advances-and-other-borrowings-details Note 10 - Short-term Borrowings and Long-term FHLB Advances - Rate and Maturity Information on Federal Home Loan Bank Advances and Other Borrowings (Details) Uncategorized 112 false false R113.htm 112 - Disclosure - Note 11 - Subordinated Notes (Details Textual) Notes http://www.bmtc.com/20161231/role/statement-note-11-subordinated-notes-details-textual Note 11 - Subordinated Notes (Details Textual) Uncategorized 113 false false R114.htm 113 - Disclosure - Note 12 - Derivatives and Hedging Activities (Details Textual) Sheet http://www.bmtc.com/20161231/role/statement-note-12-derivatives-and-hedging-activities-details-textual Note 12 - Derivatives and Hedging Activities (Details Textual) Uncategorized 114 false false R115.htm 114 - Disclosure - Note 12 - Derivatives and Hedging - Derivatives and Hedging Activities (Details) Sheet http://www.bmtc.com/20161231/role/statement-note-12-derivatives-and-hedging-derivatives-and-hedging-activities-details Note 12 - Derivatives and Hedging - Derivatives and Hedging Activities (Details) Uncategorized 115 false false R116.htm 115 - Disclosure - Note 13 - Disclosure about Fair Value of Financial Instruments (Details Textual) Sheet http://www.bmtc.com/20161231/role/statement-note-13-disclosure-about-fair-value-of-financial-instruments-details-textual Note 13 - Disclosure about Fair Value of Financial Instruments (Details Textual) Uncategorized 116 false false R117.htm 116 - Disclosure - Note 13 - Disclosure about Fair Value of Financial Instruments - Carrying Amount, Estimated Fair Value and Fair Value Hierarchy Level (Details) Sheet http://www.bmtc.com/20161231/role/statement-note-13-disclosure-about-fair-value-of-financial-instruments-carrying-amount-estimated-fair-value-and-fair-value-hierarchy-level-details Note 13 - Disclosure about Fair Value of Financial Instruments - Carrying Amount, Estimated Fair Value and Fair Value Hierarchy Level (Details) Uncategorized 117 false false R118.htm 117 - Disclosure - Note 14 - Fair Value Measurement (Details Textual) Sheet http://www.bmtc.com/20161231/role/statement-note-14-fair-value-measurement-details-textual Note 14 - Fair Value Measurement (Details Textual) Uncategorized 118 false false R119.htm 118 - Disclosure - Note 14 - Fair Value Measurement - Fair Value of Assets Measured on Recurring and Non-recurring Basis (Details) Sheet http://www.bmtc.com/20161231/role/statement-note-14-fair-value-measurement-fair-value-of-assets-measured-on-recurring-and-nonrecurring-basis-details Note 14 - Fair Value Measurement - Fair Value of Assets Measured on Recurring and Non-recurring Basis (Details) Uncategorized 119 false false R120.htm 119 - Disclosure - Note 15 - 401(K) Plan and Other Defined Contribution Plans (Details Textual) Sheet http://www.bmtc.com/20161231/role/statement-note-15-401k-plan-and-other-defined-contribution-plans-details-textual Note 15 - 401(K) Plan and Other Defined Contribution Plans (Details Textual) Uncategorized 120 false false R121.htm 120 - Disclosure - Note 16 - Pension and Postretirement Benefit Plans (Details Textual) Sheet http://www.bmtc.com/20161231/role/statement-note-16-pension-and-postretirement-benefit-plans-details-textual Note 16 - Pension and Postretirement Benefit Plans (Details Textual) Uncategorized 121 false false R122.htm 121 - Disclosure - Note 16 - Pension and Postretirement Benefit Plans - Actuarial Assumptions Used to Determine Benefit Obligations (Details) Sheet http://www.bmtc.com/20161231/role/statement-note-16-pension-and-postretirement-benefit-plans-actuarial-assumptions-used-to-determine-benefit-obligations-details Note 16 - Pension and Postretirement Benefit Plans - Actuarial Assumptions Used to Determine Benefit Obligations (Details) Uncategorized 122 false false R123.htm 122 - Disclosure - Note 16 - Pension and Postretirement Benefit Plans - Changes in Benefit Obligations and Plan Assets (Details) Sheet http://www.bmtc.com/20161231/role/statement-note-16-pension-and-postretirement-benefit-plans-changes-in-benefit-obligations-and-plan-assets-details Note 16 - Pension and Postretirement Benefit Plans - Changes in Benefit Obligations and Plan Assets (Details) Uncategorized 123 false false R124.htm 123 - Disclosure - Note 16 - Pension and Postretirement Benefit Plans - Additional Information (Details) Sheet http://www.bmtc.com/20161231/role/statement-note-16-pension-and-postretirement-benefit-plans-additional-information-details Note 16 - Pension and Postretirement Benefit Plans - Additional Information (Details) Uncategorized 124 false false R125.htm 124 - Disclosure - Note 16 - Pension and Postretirement Benefit Plans - Benefit Payments Which Reflect Expected Future Services, Expected to Be Paid Over Next Ten Years (Details) Sheet http://www.bmtc.com/20161231/role/statement-note-16-pension-and-postretirement-benefit-plans-benefit-payments-which-reflect-expected-future-services-expected-to-be-paid-over-next-ten-years-details Note 16 - Pension and Postretirement Benefit Plans - Benefit Payments Which Reflect Expected Future Services, Expected to Be Paid Over Next Ten Years (Details) Uncategorized 125 false false R126.htm 125 - Disclosure - Note 17 - Accumulated Other Comprehensive Income (Loss) - Components of Accumulated Other Comprehensive (Loss) Income (Details) Sheet http://www.bmtc.com/20161231/role/statement-note-17-accumulated-other-comprehensive-income-loss-components-of-accumulated-other-comprehensive-loss-income-details Note 17 - Accumulated Other Comprehensive Income (Loss) - Components of Accumulated Other Comprehensive (Loss) Income (Details) Uncategorized 126 false false R127.htm 126 - Disclosure - Note 17 - Accumulated Other Comprehensive Income (Loss) - Amounts Reclassified from Each Component of Accumulated Other Comprehensive (Loss) Income (Details) Sheet http://www.bmtc.com/20161231/role/statement-note-17-accumulated-other-comprehensive-income-loss-amounts-reclassified-from-each-component-of-accumulated-other-comprehensive-loss-income-details Note 17 - Accumulated Other Comprehensive Income (Loss) - Amounts Reclassified from Each Component of Accumulated Other Comprehensive (Loss) Income (Details) Uncategorized 127 false false R128.htm 127 - Disclosure - Note 18 - Income Taxes (Details Textual) Sheet http://www.bmtc.com/20161231/role/statement-note-18-income-taxes-details-textual Note 18 - Income Taxes (Details Textual) Uncategorized 128 false false R129.htm 128 - Disclosure - Note 18 - Income Taxes - Components of Net Deferred Tax Asset (Details) Sheet http://www.bmtc.com/20161231/role/statement-note-18-income-taxes-components-of-net-deferred-tax-asset-details Note 18 - Income Taxes - Components of Net Deferred Tax Asset (Details) Uncategorized 129 false false R130.htm 129 - Disclosure - Note 18 - Income Taxes - Components of Provision (Details) Sheet http://www.bmtc.com/20161231/role/statement-note-18-income-taxes-components-of-provision-details Note 18 - Income Taxes - Components of Provision (Details) Uncategorized 130 false false R131.htm 130 - Disclosure - Note 18 - Income Taxes - Difference Between Applicable Income Taxes and the Amount Derived by Applying Statutory (Details) Sheet http://www.bmtc.com/20161231/role/statement-note-18-income-taxes-difference-between-applicable-income-taxes-and-the-amount-derived-by-applying-statutory-details Note 18 - Income Taxes - Difference Between Applicable Income Taxes and the Amount Derived by Applying Statutory (Details) Uncategorized 131 false false R132.htm 131 - Disclosure - Note 19 - Stock-based Compensation (Details Textual) Sheet http://www.bmtc.com/20161231/role/statement-note-19-stockbased-compensation-details-textual Note 19 - Stock-based Compensation (Details Textual) Uncategorized 132 false false R133.htm 132 - Disclosure - Note 19 - Stock-based Compensation - Remaining Shares Authorized to Be Granted for Options, Restricted Stock Awards and Performance Stock Awards (Details) Sheet http://www.bmtc.com/20161231/role/statement-note-19-stockbased-compensation-remaining-shares-authorized-to-be-granted-for-options-restricted-stock-awards-and-performance-stock-awards-details Note 19 - Stock-based Compensation - Remaining Shares Authorized to Be Granted for Options, Restricted Stock Awards and Performance Stock Awards (Details) Uncategorized 133 false false R134.htm 133 - Disclosure - Note 19 - Stock-based Compensation - Other Stock Option Information (Details) Sheet http://www.bmtc.com/20161231/role/statement-note-19-stockbased-compensation-other-stock-option-information-details Note 19 - Stock-based Compensation - Other Stock Option Information (Details) Uncategorized 134 false false R135.htm 134 - Disclosure - Note 19 - Stock-based Compensation - Information Related to Options (Details) Sheet http://www.bmtc.com/20161231/role/statement-note-19-stockbased-compensation-information-related-to-options-details Note 19 - Stock-based Compensation - Information Related to Options (Details) Uncategorized 135 false false R136.htm 135 - Disclosure - Note 19 - Stock-based Compensation - Information about Unvested Options (Details) Sheet http://www.bmtc.com/20161231/role/statement-note-19-stockbased-compensation-information-about-unvested-options-details Note 19 - Stock-based Compensation - Information about Unvested Options (Details) Uncategorized 136 false false R137.htm 136 - Disclosure - Note 19 - Stock-based Compensation - Proceeds, Related Tax Benefits Realized from Options Exercised and Intrinsic Value of Options Exercised (Details) Sheet http://www.bmtc.com/20161231/role/statement-note-19-stockbased-compensation-proceeds-related-tax-benefits-realized-from-options-exercised-and-intrinsic-value-of-options-exercised-details Note 19 - Stock-based Compensation - Proceeds, Related Tax Benefits Realized from Options Exercised and Intrinsic Value of Options Exercised (Details) Uncategorized 137 false false R138.htm 137 - Disclosure - Note 19 - Stock-based Compensation - Options Outstanding and Exercisable (Details) Sheet http://www.bmtc.com/20161231/role/statement-note-19-stockbased-compensation-options-outstanding-and-exercisable-details Note 19 - Stock-based Compensation - Options Outstanding and Exercisable (Details) Uncategorized 138 false false R139.htm 138 - Disclosure - Note 19 - Stock-based Compensation - Unvested Restricted Stock Awards (Details) Sheet http://www.bmtc.com/20161231/role/statement-note-19-stockbased-compensation-unvested-restricted-stock-awards-details Note 19 - Stock-based Compensation - Unvested Restricted Stock Awards (Details) Uncategorized 139 false false R140.htm 139 - Disclosure - Note 19 - Stock-based Compensation - Unvested Performance Stock Awards (Details) Sheet http://www.bmtc.com/20161231/role/statement-note-19-stockbased-compensation-unvested-performance-stock-awards-details Note 19 - Stock-based Compensation - Unvested Performance Stock Awards (Details) Uncategorized 140 false false R141.htm 140 - Disclosure - Note 20 - Earnings Per Share - Calculation of Basic and Diluted Earnings Per Share (Details) Sheet http://www.bmtc.com/20161231/role/statement-note-20-earnings-per-share-calculation-of-basic-and-diluted-earnings-per-share-details Note 20 - Earnings Per Share - Calculation of Basic and Diluted Earnings Per Share (Details) Uncategorized 141 false false R142.htm 141 - Disclosure - Note 21 - Other Operating Income - Components of Other Operating Income (Details) Sheet http://www.bmtc.com/20161231/role/statement-note-21-other-operating-income-components-of-other-operating-income-details Note 21 - Other Operating Income - Components of Other Operating Income (Details) Uncategorized 142 false false R143.htm 142 - Disclosure - Note 22 - Other Operating Expense - Components of Other Operating Expense (Details) Sheet http://www.bmtc.com/20161231/role/statement-note-22-other-operating-expense-components-of-other-operating-expense-details Note 22 - Other Operating Expense - Components of Other Operating Expense (Details) Uncategorized 143 false false R144.htm 143 - Disclosure - Note 23 - Related Party Transactions (Details Textual) Sheet http://www.bmtc.com/20161231/role/statement-note-23-related-party-transactions-details-textual Note 23 - Related Party Transactions (Details Textual) Uncategorized 144 false false R145.htm 144 - Disclosure - Note 23 - Related Party Transactions - Loan Activity, Loans Granted to Principal Officers, Directors and Their Affiliates (Details) Sheet http://www.bmtc.com/20161231/role/statement-note-23-related-party-transactions-loan-activity-loans-granted-to-principal-officers-directors-and-their-affiliates-details Note 23 - Related Party Transactions - Loan Activity, Loans Granted to Principal Officers, Directors and Their Affiliates (Details) Uncategorized 145 false false R146.htm 145 - Disclosure - Note 24 - Financial Instruments with Off-Balance Sheet Risk, Contingencies and Concentration of Credit Risk (Details Textual) Sheet http://www.bmtc.com/20161231/role/statement-note-24-financial-instruments-with-offbalance-sheet-risk-contingencies-and-concentration-of-credit-risk-details-textual Note 24 - Financial Instruments with Off-Balance Sheet Risk, Contingencies and Concentration of Credit Risk (Details Textual) Uncategorized 146 false false R147.htm 146 - Disclosure - Note 25 - Dividend Restrictions (Details Textual) Sheet http://www.bmtc.com/20161231/role/statement-note-25-dividend-restrictions-details-textual Note 25 - Dividend Restrictions (Details Textual) Uncategorized 147 false false R148.htm 147 - Disclosure - Note 26 - Regulatory Capital Requirements (Details Textual) Sheet http://www.bmtc.com/20161231/role/statement-note-26-regulatory-capital-requirements-details-textual Note 26 - Regulatory Capital Requirements (Details Textual) Uncategorized 148 false false R149.htm 148 - Disclosure - Note 26 - Regulatory Capital Requirements - Capital Amounts and Ratios (Details) Sheet http://www.bmtc.com/20161231/role/statement-note-26-regulatory-capital-requirements-capital-amounts-and-ratios-details Note 26 - Regulatory Capital Requirements - Capital Amounts and Ratios (Details) Uncategorized 149 false false R150.htm 149 - Disclosure - Note 27 - Selected Quarterly Financial Data (Unaudited) - Selected Quarterly Financial Data (Details) Sheet http://www.bmtc.com/20161231/role/statement-note-27-selected-quarterly-financial-data-unaudited-selected-quarterly-financial-data-details Note 27 - Selected Quarterly Financial Data (Unaudited) - Selected Quarterly Financial Data (Details) Uncategorized 150 false false R151.htm 150 - Disclosure - Note 28 - Parent Company - Only Financial Statements - Condensed Balance Sheets (Details) Sheet http://www.bmtc.com/20161231/role/statement-note-28-parent-company-only-financial-statements-condensed-balance-sheets-details Note 28 - Parent Company - Only Financial Statements - Condensed Balance Sheets (Details) Uncategorized 151 false false R152.htm 151 - Disclosure - Note 28 - Parent Company - Only Financial Statements - Condensed Balance Sheets (Details) (Parentheticals) Sheet http://www.bmtc.com/20161231/role/statement-note-28-parent-company-only-financial-statements-condensed-balance-sheets-details-parentheticals Note 28 - Parent Company - Only Financial Statements - Condensed Balance Sheets (Details) (Parentheticals) Uncategorized 152 false false R153.htm 152 - Disclosure - Note 28 - Parent Company - Only Financial Statements - Condensed Statements of Income (Details) Sheet http://www.bmtc.com/20161231/role/statement-note-28-parent-company-only-financial-statements-condensed-statements-of-income-details Note 28 - Parent Company - Only Financial Statements - Condensed Statements of Income (Details) Uncategorized 153 false false R154.htm 153 - Disclosure - Note 28 - Parent Company - Only Financial Statements - Condensed Statements of Cash Flows (Details) Sheet http://www.bmtc.com/20161231/role/statement-note-28-parent-company-only-financial-statements-condensed-statements-of-cash-flows-details Note 28 - Parent Company - Only Financial Statements - Condensed Statements of Cash Flows (Details) Uncategorized 154 false false R155.htm 154 - Disclosure - Note 29 - Segment Information - Detail Segment Information (Details) Sheet http://www.bmtc.com/20161231/role/statement-note-29-segment-information-detail-segment-information-details Note 29 - Segment Information - Detail Segment Information (Details) Uncategorized 155 false false R156.htm 155 - Disclosure - Note 29 - Segment Information - Wealth Management Segment Information (Details) Sheet http://www.bmtc.com/20161231/role/statement-note-29-segment-information-wealth-management-segment-information-details Note 29 - Segment Information - Wealth Management Segment Information (Details) Uncategorized 156 false false R157.htm 156 - Disclosure - Note 30 - Subsequent Events (Details Textual) Sheet http://www.bmtc.com/20161231/role/statement-note-30-subsequent-events-details-textual Note 30 - Subsequent Events (Details Textual) Uncategorized 157 false false All Reports Book All Reports bmtc-20161231.xml bmtc-20161231.xsd bmtc-20161231_cal.xml bmtc-20161231_def.xml bmtc-20161231_lab.xml bmtc-20161231_pre.xml true true