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Summary Of Significant Accounting Policies (Summary Of Supplemental Cash Flow Information) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Supplemental information:
Cash paid for interest	$ 28,626	$ 14,850	$ 11,823
Cash paid for income taxes, net of refunds received	3,527	13,187	10,555
Noncash investing and financing activities:
Real estate and other assets acquired in settlement of loans	642	426	496
Accrued and declared unpaid dividends	4,187	3,859	3,403
Increase (decrease) in net unsettled security purchases	2,650		(170)
Common stock issued for acquisition			8,100
Assets acquired and liabilities assumed in business combinations:
Fair value of assets acquired	2,561	812	4,848
Fair value of liabilities assumed	$ 128	$ 44	$ 1,845

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