Consolidated Statement of Changes in Stockholders' Equity - USD ($) $ in Thousands	Common Stock	Additional Paid-in Capital	Treasury Stock, Common	Accumulated Other Comprehensive Loss	Retained Earnings	Total
Balance at Dec. 31, 2021	$ 341	$ 263,375	$ (75,293)	$ (6,684)	$ 497,889	$ 679,628
Balance (in shares) at Dec. 31, 2021	30,526,353
Net income					18,219	18,219
Award of common shares released from Employee Benefit Trust		287				287
Vesting of restricted stock unit awards		(6,019)	6,304		(285)
Vesting of restricted stock unit awards (in shares)	297,626
Purchase of treasury shares			(8,469)			(8,469)
Purchase of treasury shares (in shares)	(360,000)
Stock-based compensation expense		4,194				4,194
Repurchase of shares to satisfy tax obligation			(2,376)			(2,376)
Repurchase of shares to satisfy tax obligation (in shares)	(97,435)
Dividends on common stock					(6,850)	(6,850)
Other comprehensive loss				(8,820)		(8,820)
Balance (in shares) at Mar. 31, 2022	30,366,544
Balance at Mar. 31, 2022	$ 341	261,837	(79,834)	(15,504)	508,973	675,813
Balance at Dec. 31, 2021	$ 341	263,375	(75,293)	(6,684)	497,889	679,628
Balance (in shares) at Dec. 31, 2021	30,526,353
Net income						43,254
Other comprehensive loss				(24,580)		(24,580)
Balance (in shares) at Jun. 30, 2022	29,980,104
Balance at Jun. 30, 2022	$ 341	262,860	(88,342)	(31,264)	527,217	670,812
Balance at Mar. 31, 2022	$ 341	261,837	(79,834)	(15,504)	508,973	675,813
Balance (in shares) at Mar. 31, 2022	30,366,544
Net income					25,035	25,035
Vesting of restricted stock unit awards		(38)	43		(5)
Vesting of restricted stock unit awards (in shares)	2,015
Purchase of treasury shares			(8,534)			(8,534)
Purchase of treasury shares (in shares)	(387,689)
Stock-based compensation expense		1,061				1,061
Repurchase of shares to satisfy tax obligation			(17)			(17)
Repurchase of shares to satisfy tax obligation (in shares)	(766)
Dividends on common stock					(6,786)	(6,786)
Other comprehensive loss				(15,760)		(15,760)
Balance (in shares) at Jun. 30, 2022	29,980,104
Balance at Jun. 30, 2022	$ 341	262,860	(88,342)	(31,264)	527,217	670,812
Balance at Dec. 31, 2022	$ 341	264,332	(98,535)	(36,488)	547,507	$ 677,157
Balance (in shares) at Dec. 31, 2022	29,476,391					29,476,391
Net income					4,044	$ 4,044
Vesting of restricted stock unit awards		(5,264)	5,484		(220)
Vesting of restricted stock unit awards (in shares)	256,798
Purchase of treasury shares			(3,053)			(3,053)
Purchase of treasury shares (in shares)	(159,516)
Stock-based compensation expense		3,808				3,808
Repurchase of shares to satisfy tax obligation			(1,656)			(1,656)
Repurchase of shares to satisfy tax obligation (in shares)	(85,217)
Dividends on common stock					(6,659)	(6,659)
Other comprehensive loss				(1,296)		(1,296)
Balance (in shares) at Mar. 31, 2023	29,488,456
Balance at Mar. 31, 2023	$ 341	262,876	(97,760)	(37,784)	544,672	672,345
Balance at Dec. 31, 2022	$ 341	264,332	(98,535)	(36,488)	547,507	$ 677,157
Balance (in shares) at Dec. 31, 2022	29,476,391					29,476,391
Net income						$ 12,730
Other comprehensive loss				469		$ 469
Balance (in shares) at Jun. 30, 2023	28,960,719					28,960,719
Balance at Jun. 30, 2023	$ 341	263,744	(104,574)	(36,019)	546,755	$ 670,247
Balance at Mar. 31, 2023	$ 341	262,876	(97,760)	(37,784)	544,672	672,345
Balance (in shares) at Mar. 31, 2023	29,488,456
Net income					8,686	8,686
Vesting of restricted stock unit awards		(30)	35		(5)
Vesting of restricted stock unit awards (in shares)	1,690
Purchase of treasury shares			(6,841)			(6,841)
Purchase of treasury shares (in shares)	(528,815)
Stock-based compensation expense		898				898
Repurchase of shares to satisfy tax obligation			(8)			(8)
Repurchase of shares to satisfy tax obligation (in shares)	(612)
Dividends on common stock					(6,598)	(6,598)
Other comprehensive loss				1,765		$ 1,765
Balance (in shares) at Jun. 30, 2023	28,960,719					28,960,719
Balance at Jun. 30, 2023	$ 341	$ 263,744	$ (104,574)	$ (36,019)	$ 546,755	$ 670,247