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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
	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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