UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Income
Beginning balance (in shares) at Dec. 31, 2020		24,418,939
Beginning balance at Dec. 31, 2020	$ 1,748,319	$ 244	$ 1,519,549	$ 179,646	$ 48,880
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation	3,900		3,868	32
Exercise of stock options, net (in shares)		799
Exercise of stock options, net	70		70
Issuance of restricted stock, net (in shares)		231,467
Issuance of restricted stock, net	(2,339)	$ 3	(2,342)
Common stock dividends	(14,786)			(14,786)
Foreign currency translation adjustment	(8,712)				(8,712)
Unrealized losses on marketable securities, net of tax	(104)				(104)
Net income	9,577			9,577
Ending balance (in shares) at Mar. 31, 2021		24,651,205
Ending balance at Mar. 31, 2021	1,735,925	$ 247	1,521,145	174,469	40,064
Beginning balance (in shares) at Dec. 31, 2021		24,592,098
Beginning balance at Dec. 31, 2021	1,713,990	$ 246	1,529,969	174,572	9,203
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation	5,068		5,068	0
Issuance of restricted stock, net (in shares)		437,946
Issuance of restricted stock, net	(2,744)	$ 5	(2,749)
Repurchase of common stock (in shares)		(66,502)
Repurchase of common stock	(3,961)	$ (1)	(3,960)	0
Common stock dividends	(15,051)			(15,051)
Foreign currency translation adjustment	20,499				20,499
Unrealized losses on marketable securities, net of tax	(517)				(517)
Net income	7,029			7,029
Ending balance (in shares) at Mar. 31, 2022		24,963,542
Ending balance at Mar. 31, 2022	$ 1,724,313	$ 250	$ 1,528,328	$ 166,550	$ 29,185