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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, 2019	Jun. 30, 2018
Supplemental information:
Cash paid for interest	$ 18,818	$ 13,187
Cash paid for income taxes	5,220	1,916
Noncash investing and financing activities:
Real estate and other assets acquired in settlement of loans	68	414
Accrued and declared unpaid dividends	4,361	4,184
Increase in net unsettled security purchases	10,481	2,136
Common stock issued for Courier Capital contingent earn-out	$ 1,151
Assets acquired and liabilities assumed in business combinations:
Fair value of assets acquired		2,561
Fair value of liabilities assumed		$ 128

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