CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Common Stock	Additional Paid-in Capital	Retained Earnings (Accumulated Deficit) Cumulative Effect, Period of Adoption, Adjustment	Retained Earnings (Accumulated Deficit)	AOCI	Treasury Stock	Cumulative Effect, Period of Adoption, Adjustment	Total
Beginning balance at Dec. 31, 2018	$ 49	$ 1,080,084		$ (72,167)	$ (6,812)	$ (6,190)		$ 994,964
Beginning Balance (in shares) at Dec. 31, 2018	48,874,836
Increase (decrease) in shareholders' equity
Net income				102,953				102,953
OCI, net of tax					21,772			21,772
Stock issued in acquisition, net of stock issuance costs	$ 7	166,274						166,281
Stock issued in acquisition, net of stock issuance costs (in shares)	6,725,152
Repurchase of stock						(24,292)		(24,292)
Repurchase of stock (in shares)	(943,396)
Issuance of treasury stock for ESPP		137				487		624
Issuance of treasury stock for ESPP (in shares)	25,698
Net issuance of treasury stock for restricted/deferred stock unit vesting and related tax		(2,600)				382		(2,218)
Net issuance of treasury stock for restricted/deferred stock unit vesting and related tax (in shares)	92,996
Issuance of treasury stock for stock options exercised, net of shares redeemed and related tax		(104)				1,628		1,524
Issuance of treasury stock for stock options exercised, net of shares redeemed and related tax (in shares)	13,486
Cash dividends common stock				(45,171)				(45,171)
Stock dividend equivalents RSUs		428		(428)
Stock-based compensation		3,997						3,997
Ending balance at Dec. 31, 2019	$ 56	1,248,216	$ (15,922)	(14,813)	14,960	(27,985)	$ (15,922)	1,220,434
Ending Balance (in shares) at Dec. 31, 2019	54,788,772
Increase (decrease) in shareholders' equity
Net income				100,344				100,344
OCI, net of tax					18,349			18,349
Repurchase of stock						(12,272)		(12,272)
Repurchase of stock (in shares)	(531,114)
Issuance of treasury stock for ESPP		(59)				606		547
Issuance of treasury stock for ESPP (in shares)	32,063
Net issuance of treasury stock for restricted/deferred stock unit vesting and related tax		(2,648)				2,013		(635)
Net issuance of treasury stock for restricted/deferred stock unit vesting and related tax (in shares)	106,589
Issuance of treasury stock for stock options exercised, net of shares redeemed and related tax		(51)				152		101
Issuance of treasury stock for stock options exercised, net of shares redeemed and related tax (in shares)	8,069
Cash dividends common stock				(48,012)				(48,012)
Stock dividend equivalents RSUs		767		(767)
Stock-based compensation		7,135						7,135
Ending balance at Dec. 31, 2020	$ 56	1,253,360		20,830	33,309	(37,486)		1,270,069
Ending Balance (in shares) at Dec. 31, 2020	54,404,379
Increase (decrease) in shareholders' equity
Net income				123,449				123,449
OCI, net of tax					(57,067)			(57,067)
Stock issued in acquisition, net of stock issuance costs	$ 2	58,953						58,955
Stock issued in acquisition, net of stock issuance costs (in shares)	2,206,237
Repurchase of stock						(33,043)		(33,043)
Repurchase of stock (in shares)	(1,323,000)
Issuance of treasury stock for ESPP		(136)				782		646
Issuance of treasury stock for ESPP (in shares)	30,390
Net issuance of treasury stock for restricted/deferred stock unit vesting and related tax		(4,109)				3,112		(997)
Net issuance of treasury stock for restricted/deferred stock unit vesting and related tax (in shares)	116,904
Cash dividends common stock				(50,764)				(50,764)
Stock dividend equivalents RSUs		1,052		(1,052)
Stock-based compensation		7,864						7,864
Ending balance at Dec. 31, 2021	$ 58	$ 1,316,984		$ 92,463	$ (23,758)	$ (66,635)		$ 1,319,112
Ending Balance (in shares) at Dec. 31, 2021	55,434,910