Loans and the Allowance for Loan and Lease Losses (Details) - Composition of loan portfolio - USD ($) $ in Thousands |
Dec. 31, 2016 |
Dec. 31, 2015 |
|---|---|---|
| Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
| Gross loans | $ 3,479,441 | $ 3,101,794 |
| Net deferred (fees) | (3,609) | (2,787) |
| Total loans receivable | 3,475,832 | 3,099,007 |
| Commercial Portfolio Segment [Member] | ||
| Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
| Gross loans | 553,576 | 570,116 |
| Commercial Real Estate Portfolio Segment [Member] | ||
| Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
| Gross loans | 2,204,710 | 1,966,696 |
| Construction Loans [Member] | ||
| Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
| Gross loans | 486,228 | 328,838 |
| Residential Portfolio Segment [Member] | ||
| Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
| Gross loans | 232,547 | 233,690 |
| Consumer Portfolio Segment [Member] | ||
| Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
| Gross loans | $ 2,380 | $ 2,454 |