Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands	Total	Capital Stock, Common	Additional Paid-in Capital	Retained Earnings	Treasury Stock
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)
Net income	76,906	0	0	76,906	0
Dividends on common stock, $0.02 per share	(1,579)	0	0	(1,579)	0
Stock-based compensation, net of tax	47	0	(14)	0	61
Balance at Jun. 30, 2022	817,902	907	4,191	1,014,898	(202,094)
Net income	24,415	0	0	24,415	0
Dividends on common stock, $0.02 per share	(1,580)	0	0	(1,580)	0
Stock-based compensation, net of tax	152	0	114	0	38
Balance at Sep. 30, 2022	840,889	907	4,305	1,037,733	(202,056)
Balance at Dec. 31, 2022	855,477	907	4,165	1,051,641	(201,236)
Net income	12,612	0	0	12,612	0
Dividends on common stock, $0.02 per share	(1,581)	0	0	(1,581)	0
Stock-based compensation, net of tax	111	0	32	0	79
Balance at Mar. 31, 2023	866,619	907	4,197	1,062,672	(201,157)
Net income	7,771	0	0	7,771	0
Dividends on common stock, $0.02 per share	(1,580)	0	0	(1,580)	0
Stock-based compensation, net of tax	127	0	(299)	0	426
Balance at Jun. 30, 2023	872,937	907	3,898	1,068,863	(200,731)
Net income	(10,703)	0	0	(10,703)	0
Dividends on common stock, $0.02 per share	(1,581)	0	0	(1,581)	0
Stock-based compensation, net of tax	477	0	363	0	114
Balance at Sep. 30, 2023	$ 861,130	$ 907	$ 4,261	$ 1,056,579	$ (200,617)