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Basis of Presentation and Summary of Significant Accounting Policies (Summary of Supplemental Cash Flow Information) (Details) - USD ($) $ in Thousands | 6 Months Ended
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Jun. 30, 2020 | Jun. 30, 2019
Supplemental information: |  |
Cash paid for interest | $ 18,545 | $ 18,818
Cash paid for income taxes | 959 | 5,220
Noncash investing and financing activities: |  |
Real estate and other assets acquired in settlement of loans | 646 | 68
Accrued and declared unpaid dividends | $ 4,529 | 4,361
Increase in net unsettled security purchases |  | 10,481
Common stock issued for Courier Capital contingent earn-out |  | $ 1,151

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