Condensed Parent Company Statements - Statements of Cash Flows (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Statements of Cash Flows
Prepaid expenses and other assets	$ 24,248	$ (3,257)	$ 17,163
Accounts payable and accrued expenses	73,808	25,956
Net cash provided by operating activities	66,580	84,976	46,048
Net cash provided by investing activities	(801,280)	190,713	(131,346)
Proceeds from issuance of subordinated notes	0	0	73,513
Redemption of subordinated notes	0	(75,000)	0
Net cash provided by (used in) financing activities	185,953	(122,151)	428,872
Cash and Cash Equivalents, Beginning of Year	717,267	563,729	220,155
Cash and Cash Equivalents, End of Year	168,520	717,267	563,729
Parent Company
Statements of Cash Flows
Net income	75,948	74,627	59,313
Equity in undistributed earnings of subsidiary	(22,188)	(8,511)	(27,164)
Compensation expense for stock option grants	1,437	1,225	1,153
Amortization of interest rate derivative and deferred costs on subordinated notes	297	587	608
Prepaid expenses and other assets	(14)	15	(15)
Accounts payable and accrued expenses	69	(1,661)	31
Income taxes	(54)	63	(46)
Net cash provided by operating activities	55,495	66,345	33,880
Purchases of the Company's common stock	(61,847)	(39,123)	(22,104)
Proceeds from issuance of subordinated notes			73,513
Redemption of subordinated notes		(75,000)
Dividends paid	(19,181)	(18,800)	(33,426)
Stock options exercised	6,258	3,700	661
Net cash provided by (used in) financing activities	(74,770)	(129,223)	18,644
Increase (Decrease) in Cash	(19,275)	(62,878)	52,524
Cash and Cash Equivalents, Beginning of Year	48,372	111,250	58,726
Cash and Cash Equivalents, End of Year	29,097	48,372	111,250
Interest paid	$ 5,115	$ 9,103	$ 7,349