Consolidated Statements of Changes in Shareholders' Equity - USD ($) $ in Thousands	Total	Common Stock	Retained Earnings	Accumulated Other Comprehensive Income (loss)
Beginning balance at Dec. 31, 2019	$ 893,587	$ 543,998	$ 354,811	$ (5,222)
Beginning balance (in shares) at Dec. 31, 2019		30,523,824
Net income	64,814		64,814
Other comprehensive income (loss)	17,502			17,502
Service condition RSU vesting	1,390	$ 1,390
Market plus service condition RSU vesting	646	646
Stock options exercised	547	$ 547
Stock options exercised (in shares)		32,000
Service condition RSUs released (in shares)		34,388
Market plus service conditions RSUs released (in shares)		20,265
Repurchase of common stock	(27,069)	$ (15,746)	(11,323)
Repurchase of common stock (in shares)		(883,263)
Dividends paid	(26,303)		(26,303)
Ending balance at Dec. 31, 2020	925,114	$ 530,835	381,999	12,280
Ending balance (in shares) at Dec. 31, 2020		29,727,214
Net income	117,655		117,655
Other comprehensive income (loss)	(11,299)			(11,299)
Service condition RSU vesting	1,728	$ 1,728
Market plus service condition RSU vesting	910	910
Stock options exercised	$ 758	$ 758
Stock options exercised (in shares)	49,675	49,675
Service condition RSUs released (in shares)		45,492
Market plus service conditions RSUs released (in shares)		19,272
Repurchase of common stock	$ (4,958)	$ (1,987)	(2,971)
Repurchase of common stock (in shares)		(111,229)
Dividends paid	(29,724)		(29,724)
Ending balance at Dec. 31, 2021	$ 1,000,184	$ 532,244	466,959	981
Ending balance (in shares) at Dec. 31, 2021	29,730,424	29,730,424
Net income	$ 125,419		125,419
Other comprehensive income (loss)	(194,886)			(194,886)
Service condition RSU vesting	2,883	$ 2,883
Market plus service condition RSU vesting	986	986
Stock options exercised	$ 1,190	$ 1,190
Stock options exercised (in shares)	63,325	63,325
Service condition RSUs released (in shares)		50,076
Market plus service conditions RSUs released (in shares)		26,338
Issuance of common stock	$ 173,585	$ 173,585
Issuance of common stock (in shares)		4,105,518
Repurchase of common stock	(27,148)	$ (13,440)	(13,708)
Repurchase of common stock (in shares)		(644,168)
Dividends paid	(35,797)		(35,797)
Ending balance at Dec. 31, 2022	$ 1,046,416	$ 697,448	$ 542,873	$ (193,905)
Ending balance (in shares) at Dec. 31, 2022	33,331,513	33,331,513