Consolidated Statements of Stockholders' Equity - USD ($) shares in Thousands, $ in Thousands	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Total
Balance (in shares) at Dec. 31, 2020	82,705
Balance at Dec. 31, 2020	$ 827	$ 85,070	$ 534,436	$ 620,333
Net income	$ 0	0	85,428	85,428
Issuance of common stock from share-based payment arrangement exercises and vesting of performance unit awards (in shares)	329
Issuance of common stock from share-based payment arrangement exercises and vesting of performance unit awards	$ 3	873	0	876
Employee taxes paid in exchange for shares withheld	0	(2,743)	0	(2,743)
Share-based payment arrangement compensation expense	0	2,518	0	2,518
Dividends on common stock	$ 0	0	(54,735)	(54,735)
Balance (in shares) at Dec. 31, 2021	83,034
Balance at Dec. 31, 2021	$ 830	85,718	565,129	651,677
Net income	$ 0	0	110,354	110,354
Issuance of common stock from share-based payment arrangement exercises and vesting of performance unit awards (in shares)	351
Issuance of common stock from share-based payment arrangement exercises and vesting of performance unit awards	$ 4	1,996	0	2,000
Employee taxes paid in exchange for shares withheld	0	(1,610)	0	(1,610)
Share-based payment arrangement compensation expense	0	2,814	0	2,814
Dividends on common stock	$ 0	0	(19,563)	(19,563)
Repurchase and retirement of common stock (in shares)	(2,270)
Repurchase and retirement of common stock	$ (23)	(41,730)	0	(41,753)
Balance (in shares) at Dec. 31, 2022	81,115
Balance at Dec. 31, 2022	$ 811	47,188	655,920	703,919
Net income	$ 0	0	70,373	70,373
Issuance of common stock from share-based payment arrangement exercises and vesting of performance unit awards (in shares)	197
Issuance of common stock from share-based payment arrangement exercises and vesting of performance unit awards	$ 2	1,208	0	1,210
Employee taxes paid in exchange for shares withheld	0	(926)	0	(926)
Share-based payment arrangement compensation expense	0	2,319	0	2,319
Dividends on common stock	$ 0	0	(19,509)	$ (19,509)
Repurchase and retirement of common stock (in shares)				0
Balance (in shares) at Dec. 31, 2023	81,312
Balance at Dec. 31, 2023	$ 813	$ 49,789	$ 706,784	$ 757,386