Note 5 - Loans and Allowance for Loan Losses (Details Textual)
$ in Thousands |
12 Months Ended |
|
|
Dec. 31, 2016
USD ($)
|
Dec. 31, 2015
USD ($)
|
Dec. 31, 2014
USD ($)
|
Dec. 31, 2013
USD ($)
|
| Financing Receivable, Recorded Investment, Current |
$ 2,312,445
|
$ 1,637,907
|
|
|
| Loans and Leases Receivable, Allowance |
$ 12,125
|
9,064
|
|
|
| Qualitative Reserve Other Adjustment Rate |
0.05%
|
|
|
|
| Qualitative Reserve Other Maximum Adjustment |
0.50%
|
|
|
|
| Specific Review Loan Threshold |
$ 1,000
|
|
|
|
| Fair Value Disclosure, Off-balance Sheet Risks, Amount, Liability |
125
|
125
|
|
|
| Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing |
1,200
|
1,200
|
|
|
| Impaired Financing Receivable, Interest Income, Cash Basis Method |
74
|
78
|
$ 158
|
|
| Loans and Leases Receivable, Impaired, Interest Lost on Nonaccrual Loans |
$ 1,100
|
$ 1,000
|
1,100
|
|
| Percentage of Total Assets |
2.60%
|
3.80%
|
|
|
| Impaired Financing Receivable, Related Allowance |
$ 198
|
$ 192
|
|
|
| Financing Receivable, Modifications, Number of Contracts |
6
|
4
|
|
|
| Financing Receivable, Recorded Investment, Nonaccrual Status |
$ 8,819
|
$ 4,326
|
|
|
| Line of Credit Facility Remaining Borrowing Capacity Related Parties |
716
|
|
|
|
| Financing Receivable, Allowance for Credit Losses |
12,125
|
9,064
|
8,262
|
|
| Geographic Distribution, Foreign [Member] |
|
|
|
|
| Financing Receivable, Allowance for Credit Losses |
$ 0
|
$ 0
|
|
|
| Extended Maturity [Member] |
|
|
|
|
| Financing Receivable, Modifications, Number of Contracts |
5
|
4
|
|
|
| Commercial Portfolio Segment [Member] |
|
|
|
|
| Financing Receivable, Recorded Investment, Current |
$ 1,828,962
|
$ 1,188,095
|
|
|
| Impaired Financing Receivable, Interest Income, Accrual Method |
74
|
78
|
252
|
|
| Impaired Financing Receivable, Unpaid Principal Balance |
3,989
|
2,594
|
|
|
| Impaired Financing Receivable, Recorded Investment |
3,772
|
2,429
|
|
|
| Impaired Financing Receivable, Related Allowance |
2
|
0
|
|
|
| Financing Receivable, Recorded Investment, Nonaccrual Status |
$ 3,688
|
1,687
|
|
|
| Commercial Portfolio Segment [Member] | Contractual Interest Rate Reduction [Member] |
|
|
|
|
| Financing Receivable, Modifications, Number of Contracts |
1
|
|
|
|
| Commercial Portfolio Segment [Member] | Extended Maturity [Member] |
|
|
|
|
| Financing Receivable, Modifications, Number of Contracts |
3
|
|
|
|
| Consumer Portfolio Segment [Member] |
|
|
|
|
| Financing Receivable, Recorded Investment, Current |
$ 483,483
|
449,812
|
|
|
| Impaired Financing Receivable, Interest Income, Accrual Method |
64
|
73
|
127
|
|
| Impaired Financing Receivable, Unpaid Principal Balance |
4,758
|
3,241
|
|
|
| Impaired Financing Receivable, Recorded Investment |
4,702
|
2,923
|
|
|
| Impaired Financing Receivable, Related Allowance |
196
|
192
|
|
|
| Financing Receivable, Recorded Investment, Nonaccrual Status |
$ 5,131
|
2,639
|
|
|
| Consumer Portfolio Segment [Member] | Extended Maturity [Member] |
|
|
|
|
| Financing Receivable, Modifications, Number of Contracts |
2
|
|
|
|
| Purchased Credit Impaired Loans [Member] |
|
|
|
|
| Impaired Financing Receivable, Unpaid Principal Balance |
$ 109,800
|
121,000
|
|
|
| Impaired Financing Receivable, Recorded Investment |
85,500
|
94,900
|
|
|
| Receivables Acquired with Deteriorated Credit Quality [Member] |
|
|
|
|
| Financing Receivable, Allowance for Credit Losses |
$ 0
|
0
|
0
|
$ 360
|
| Minimum [Member] |
|
|
|
|
| Qualitative Reserve Applicable Rate |
0.00%
|
|
|
|
| Maximum [Member] |
|
|
|
|
| Qualitative Reserve Applicable Rate |
0.15%
|
|
|
|
| Performing Financial Instruments [Member] |
|
|
|
|
| Loans and Leases Receivable, Allowance |
$ 257
|
178
|
|
|
| Loans Receivable, Fair Value Disclosure |
3,400
|
2,100
|
|
|
| Servicing For Other Facility [Member] |
|
|
|
|
| Financing Receivable, Recorded Investment, Current |
2,300
|
2,800
|
|
|
| Sold with Limited Recourse [Member] |
|
|
|
|
| Increase (Decrease) in Loans Held-for-sale |
114,000
|
98,700
|
|
|
| Accruing TDRs [Member] |
|
|
|
|
| Impaired Financing Receivable, Interest Income, Accrual Method |
$ 297
|
$ 190
|
$ 379
|
|
| Troubled Debt Restructurings [Member] |
|
|
|
|
| Financing Receivable, Modifications, Number of Contracts |
11
|
14
|
|
|
| Financing Receivable, Modifications, Recorded Investment |
$ 2,900
|
$ 3,300
|
|
|
| Financing Receivable, Recorded Investment, Nonaccrual Status |
374
|
466
|
|
|
| Loans Sold to Other Financial Institutions [Member] |
|
|
|
|
| Loans Receivable, Net |
$ 20,200
|
$ 12,500
|
|
|