CONSOLIDATED STATEMENTS OF SHAREHOLDERS’ EQUITY - USD ($) $ in Thousands		Total	Common Stock	Additional Paid-in- Capital	Accumulated Other Comprehensive Income (Loss)	Treasury Stock	Retained Earnings
Beginning balance (in shares) at Dec. 31, 2021			55,609,226
Beginning balance at Dec. 31, 2021		$ 265,882	$ 951	$ 259,317	$ (4,574)	$ (1,265,032)	$ 1,275,220
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income		67,391					67,391
Other comprehensive income (loss), net of tax		(134)			(134)
Share-based payment activity (in shares)	[1]		262,008
Share-based payment activity	[1]	9,558		6,068		3,486	4
Dividends declared		(13,250)					(13,250)
Treasury purchases (in shares)			(100,912)
Treasury purchases		(14,802)				(14,802)
Ending balance (in shares) at Mar. 31, 2022			55,770,322
Ending balance at Mar. 31, 2022		314,645	$ 951	265,385	(4,708)	(1,276,348)	1,329,365
Beginning balance (in shares) at Dec. 31, 2021			55,609,226
Beginning balance at Dec. 31, 2021		265,882	$ 951	259,317	(4,574)	(1,265,032)	1,275,220
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income		276,639
Other comprehensive income (loss), net of tax		(1,139)
Ending balance (in shares) at Sep. 30, 2022			53,773,667
Ending balance at Sep. 30, 2022		284,511	$ 951	284,092	(5,713)	(1,507,423)	1,512,604
Beginning balance (in shares) at Mar. 31, 2022			55,770,322
Beginning balance at Mar. 31, 2022		314,645	$ 951	265,385	(4,708)	(1,276,348)	1,329,365
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income		106,168					106,168
Other comprehensive income (loss), net of tax		(103)			(103)
Share-based payment activity (in shares)	[1]		12,422
Share-based payment activity	[1]	9,595		8,999		596
Dividends declared		(13,242)					(13,242)
Treasury purchases (in shares)			(2,422)
Treasury purchases		(338)				(338)
Ending balance (in shares) at Jun. 30, 2022			55,780,322
Ending balance at Jun. 30, 2022		416,725	$ 951	274,384	(4,811)	(1,276,090)	1,422,291
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income		103,080					103,080
Other comprehensive income (loss), net of tax		(902)			(902)
Share-based payment activity (in shares)	[1]		(1,655)
Share-based payment activity	[1]	9,763		9,708		55	0
Dividends declared		(12,767)					(12,767)
Treasury purchases (in shares)			(2,005,000)
Treasury purchases		(231,388)				(231,388)
Ending balance (in shares) at Sep. 30, 2022			53,773,667
Ending balance at Sep. 30, 2022		$ 284,511	$ 951	284,092	(5,713)	(1,507,423)	1,512,604
Beginning balance (in shares) at Dec. 31, 2022		52,200,903	52,200,903
Beginning balance at Dec. 31, 2022		$ 154,660	$ 951	298,053	(5,211)	(1,694,857)	1,555,724
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income		52,820					52,820
Other comprehensive income (loss), net of tax		394			394
Share-based payment activity (in shares)	[1]		315,049
Share-based payment activity	[1]	15,396		1,899		13,497
Dividends declared		(14,709)					(14,709)
Treasury purchases (in shares)	[2]		(1,341,520)
Treasury purchases	[2]	(161,553)				(161,553)
Ending balance (in shares) at Mar. 31, 2023			51,174,432
Ending balance at Mar. 31, 2023		$ 47,008	$ 951	299,952	(4,817)	(1,842,913)	1,593,835
Beginning balance (in shares) at Dec. 31, 2022		52,200,903	52,200,903
Beginning balance at Dec. 31, 2022		$ 154,660	$ 951	298,053	(5,211)	(1,694,857)	1,555,724
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income		229,554
Other comprehensive income (loss), net of tax		$ 498
Ending balance (in shares) at Sep. 30, 2023		50,026,433	50,026,433
Ending balance at Sep. 30, 2023		$ 72,413	$ 951	321,790	(4,713)	(1,987,262)	1,741,647
Beginning balance (in shares) at Mar. 31, 2023			51,174,432
Beginning balance at Mar. 31, 2023		47,008	$ 951	299,952	(4,817)	(1,842,913)	1,593,835
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income		84,710					84,710
Other comprehensive income (loss), net of tax		295			295
Share-based payment activity (in shares)	[1]		10,508
Share-based payment activity	[1]	11,915		11,336		579
Dividends declared		(14,540)					(14,540)
Treasury purchases (in shares)	[2]		(619,059)
Treasury purchases	[2]	(74,697)				(74,697)
Ending balance (in shares) at Jun. 30, 2023			50,565,881
Ending balance at Jun. 30, 2023		54,691	$ 951	311,288	(4,522)	(1,917,031)	1,664,005
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income		92,024					92,024
Other comprehensive income (loss), net of tax		(191)			(191)
Share-based payment activity (in shares)	[1]		22,372
Share-based payment activity	[1]	10,905		10,502		403
Dividends declared		(14,382)					(14,382)
Treasury purchases (in shares)	[2]		(561,820)
Treasury purchases	[2]	$ (70,634)				(70,634)
Ending balance (in shares) at Sep. 30, 2023		50,026,433	50,026,433
Ending balance at Sep. 30, 2023		$ 72,413	$ 951	$ 321,790	$ (4,713)	$ (1,987,262)	$ 1,741,647

[1] During certain periods presented, accumulated dividends were paid to certain shareholders upon vesting of their performance vested restricted stock units ("PVRSU") which are presented in Share-based payment activity.

[2] Beginning January 1, 2023, Treasury purchases include an excise tax as imposed by the Inflation Reduction Act of 2022.