Basis of Presentation And Summary Of Significant Accounting Policies (Summary Of Supplemental Cash Flow Information) (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Supplemental information:
Cash paid for interest	$ 28,672	$ 19,803
Cash paid for income taxes	8,666	3,790
Noncash investing and financing activities:
Real estate and other assets acquired in settlement of loans	159	596
Accrued and declared unpaid dividends	4,363	4,187
Decrease in net unsettled security purchases	(2,650)
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