Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands	Total	Cumulative Effect, Period of Adoption, Adjustment	Common Stock	Common Stock- Additional Paid-in Capital	Retained Earnings	Retained Earnings Cumulative Effect, Period of Adoption, Adjustment	Accumulated Other Comprehensive Income (Loss)	Treasury Stock
Beginning Balance (in shares) at Dec. 31, 2018			37,318,942
Beginning Balance at Dec. 31, 2018	$ 750,095	$ (6,516)	$ 5	$ 451,427	$ 412,086	$ (6,516)	$ (1,656)	$ (111,767)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Conversion of restricted stock units to common stock (net of shares of treasury stock purchased) (in shares)			345,655
Conversion of restricted stock units to common stock (net of shares of treasury stock purchased)	(3,317)							(3,317)
Settlement of stock appreciation rights in common stock (net of shares of treasury stock purchased) (in shares)			26,346
Settlement of stock appreciation rights in common stock (net of shares of treasury stock purchased)	(232)			(31)				(201)
Convertible debt extinguishment impact, net of tax	(9,715)			(9,715)
Settlement of convertible debt in common stock, net of shares of treasury stock (in shares)			1,902,781
Settlement of convertible debt in common stock, net of shares of treasury stock	0			(18,779)				18,779
Unwind of capped call options (in shares)			(626,645)
Unwind of capped call options	0			8,982				(8,982)
Stock compensation expense	6,707			6,707
Other comprehensive income (loss)	(338)						(338)
Net income	362,828				362,828
Ending Balance (in shares) at Dec. 31, 2019			38,967,079
Ending Balance at Dec. 31, 2019	1,099,512		$ 5	438,591	768,398		(1,994)	(105,488)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Conversion of restricted stock units to common stock (net of shares of treasury stock purchased) (in shares)			294,734
Conversion of restricted stock units to common stock (net of shares of treasury stock purchased)	(3,917)							(3,917)
Settlement of stock appreciation rights in common stock (net of shares of treasury stock purchased) (in shares)			73,026
Settlement of stock appreciation rights in common stock (net of shares of treasury stock purchased)	(1,861)			(598)				(1,263)
Convertible debt extinguishment impact, net of tax	(52,688)			(52,688)
Stock compensation expense	6,942			6,942
Other comprehensive income (loss)	3,154						3,154
Net income	122,813				122,813
Ending Balance (in shares) at Dec. 31, 2020			39,334,839
Ending Balance at Dec. 31, 2020	1,173,955		$ 5	392,247	891,211		1,160	(110,668)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Conversion of restricted stock units to common stock (net of shares of treasury stock purchased) (in shares)			376,010
Conversion of restricted stock units to common stock (net of shares of treasury stock purchased)	(13,495)							(13,495)
Settlement of stock appreciation rights in common stock (net of shares of treasury stock purchased) (in shares)			149,393
Settlement of stock appreciation rights in common stock (net of shares of treasury stock purchased)	(9,530)			(782)				(8,748)
Settlement of convertible debt in common stock, net of shares of treasury stock (in shares)			4,684,263
Settlement of convertible debt in common stock, net of shares of treasury stock	(6,929)			(55,555)				48,626
Equity issuance (net of issuance costs) (in shares)			5,750,000
Equity issuance (net of issuance costs)	365,280		$ 1	365,279
Stock compensation expense	7,997			7,997
Other comprehensive income (loss)	(3,271)						(3,271)
Net income	213,819				213,819
Ending Balance (in shares) at Dec. 31, 2021			50,294,505
Ending Balance at Dec. 31, 2021	$ 1,727,826		$ 6	$ 709,186	$ 1,105,030		$ (2,111)	$ (84,285)