Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands	Total	Capital Stock, Common	Additional Paid-in Capital	Retained Earnings	Treasury Stock
Balance at Dec. 31, 2020	$ 724,334	$ 907	$ 4,330	$ 890,970	$ (171,873)
Net income	13,734	0	0	13,734	0
Dividends on common stock, $0.02 per share	(1,599)	0	0	(1,599)	0
Repurchases of common stock	(14,537)	0	0	0	(14,537)
Stock-based compensation, net of tax	485	0	146	0	339
Balance at Mar. 31, 2021	722,417	907	4,476	903,105	(186,071)
Balance at Dec. 31, 2021	727,102	907	4,141	924,375	(202,321)
Net income	16,775	0	0	16,775	0
Dividends on common stock, $0.02 per share	(1,579)	0	0	(1,579)	0
Stock-based compensation, net of tax	230	0	64	0	166
Balance at Mar. 31, 2022	$ 742,528	$ 907	$ 4,205	$ 939,571	$ (202,155)