Parent Company Statements (Condensed Statement of Cash Flows) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Net Income	$ 29,319	$ 26,209	$ 17,701
Other, net	(4,321)	(1,971)	(8,193)
Net Cash Provided By Operating Activities	65,899	14,069	7,831
Purchases of premises and equipment	(3,497)	(3,685)	(3,885)
Net Cash Provided By (Used In) Investing Activities	169,371	(588,912)	(26,985)
Dividends paid	(8,872)	(6,504)	(6,688)
Treasury stock purchased	(128)	(1,795)
Net Cash Provided By Financing Activities	374,758	739,537	118,119
Net increase in cash and cash equivalents	610,028	164,694	98,965
Cash and cash equivalents, beginning of year	303,724	139,030	40,065
Cash and cash equivalents, end of year	913,752	303,724	139,030
Parent Company [Member]
Net Income	29,319	26,209	17,701
Equity in undistributed earnings of subsidiaries	(37,638)	(21,616)	(12,486)
Other, net	5,473	582	139
Net Cash Provided By Operating Activities	(2,846)	5,175	5,354
Net cash paid for acquisition	(792)
Investment in subsidiary	(27,353)	(10,500)
Purchases of premises and equipment			(81)
Net Cash Provided By (Used In) Investing Activities	(28,145)	(10,500)	(81)
Dividends paid	(8,872)	(6,504)	(6,688)
Proceeds from follow-on common stock public offering	70,545
Treasury stock purchased	(128)	(1,795)
Subordinated debt issuance		27,150
Other, net	(283)
Net Cash Provided By Financing Activities	61,569	19,146	(6,419)
Net increase in cash and cash equivalents	30,578	13,821	(1,146)
Cash and cash equivalents, beginning of year	14,247	426	1,572
Cash and cash equivalents, end of year	44,825	14,247	426
Parent Company [Member] | Employee [Member]
Stock Purchase Plan stock issuance	172	147	134
Parent Company [Member] | Directors [Member]
Stock Purchase Plan stock issuance	$ 135	$ 148	$ 135