CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY (Unaudited) - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Treasury Stock
Beginning Balance at Dec. 31, 2020	$ 2,016,059	$ 2,710	$ 2,902,236	$ 472,014	$ 5,412	$ (1,366,313)
Beginning Balance (in shares) at Dec. 31, 2020		271,029
Net income (loss)	(106,413)			(106,413)
Foreign currency translation adjustment, net of taxes of $0 for all periods	418				418
Vesting of restricted stock units (in shares)		163
Vesting of restricted stock units		$ 2	(2)
Stock-based compensation	5,891		5,891
Payment of cash dividends	(3,754)			(3,754)
Dividend equivalents	(55)			(55)
Ending Balance at Mar. 31, 2021	1,912,146	$ 2,712	2,908,125	361,792	5,830	(1,366,313)
Ending Balance (in shares) at Mar. 31, 2021		271,192
Beginning Balance at Dec. 31, 2020	2,016,059	$ 2,710	2,902,236	472,014	5,412	(1,366,313)
Beginning Balance (in shares) at Dec. 31, 2020		271,029
Net income (loss)	(292,720)
Foreign currency translation adjustment, net of taxes of $0 for all periods	441
Release of cumulative translation adjustment, net of taxes of $0 and $3,770, into net income (loss) for three and nine months ended September 30, 2022	0
Ending Balance at Sep. 30, 2021	1,725,645	$ 2,729	2,919,090	167,860	5,853	(1,369,887)
Ending Balance (in shares) at Sep. 30, 2021		272,886
Beginning Balance at Mar. 31, 2021	1,912,146	$ 2,712	2,908,125	361,792	5,830	(1,366,313)
Beginning Balance (in shares) at Mar. 31, 2021		271,192
Net income (loss)	(103,309)			(103,309)
Foreign currency translation adjustment, net of taxes of $0 for all periods	255				255
Issuance of restricted stock (in shares)		621
Issuance of restricted stock, value		$ 6	(6)
Vesting of restricted stock units (in shares)		1,022
Vesting of restricted stock units		$ 10	(10)
Stock-based compensation	5,934		5,934
Payment of cash dividends	(3,769)			(3,769)
Dividend equivalents	(18)			(18)
Purchase of treasury stock	(3,522)					(3,522)
Ending Balance at Jun. 30, 2021	1,807,717	$ 2,728	2,914,043	254,696	6,085	(1,369,835)
Ending Balance (in shares) at Jun. 30, 2021		272,835
Net income (loss)	(82,998)			(82,998)
Foreign currency translation adjustment, net of taxes of $0 for all periods	(232)				(232)
Vesting of restricted stock units (in shares)		51
Vesting of restricted stock units		$ 1	(1)
Release of cumulative translation adjustment, net of taxes of $0 and $3,770, into net income (loss) for three and nine months ended September 30, 2022	0
Stock-based compensation	5,048		5,048
Payment of cash dividends	(3,780)			(3,780)
Dividend equivalents	(58)			(58)
Purchase of treasury stock	(52)					(52)
Ending Balance at Sep. 30, 2021	1,725,645	$ 2,729	2,919,090	167,860	5,853	(1,369,887)
Ending Balance (in shares) at Sep. 30, 2021		272,886
Beginning Balance at Dec. 31, 2021	$ 1,609,487	$ 2,993	3,171,536	(198,316)	5,915	(1,372,641)
Beginning Balance (in shares) at Dec. 31, 2021	299,268,967	299,269
Net income (loss)	$ (28,777)			(28,777)
Foreign currency translation adjustment, net of taxes of $0 for all periods	115				115
Vesting of restricted stock units (in shares)		150
Vesting of restricted stock units		$ 1	(1)
Stock-based compensation	4,642		4,642
Payment of cash dividends	(8,611)			(8,611)
Dividend equivalents	(144)			(144)
Purchase of treasury stock	(13)					(13)
Ending Balance at Mar. 31, 2022	1,576,699	$ 2,994	3,176,177	(235,848)	6,030	(1,372,654)
Ending Balance (in shares) at Mar. 31, 2022		299,419
Beginning Balance at Dec. 31, 2021	$ 1,609,487	$ 2,993	3,171,536	(198,316)	5,915	(1,372,641)
Beginning Balance (in shares) at Dec. 31, 2021	299,268,967	299,269
Net income (loss)	$ 54,561
Foreign currency translation adjustment, net of taxes of $0 for all periods	1,793
Release of cumulative translation adjustment, net of taxes of $0 and $3,770, into net income (loss) for three and nine months ended September 30, 2022	$ (7,708)
Exercised	640,000
Ending Balance at Sep. 30, 2022	$ 1,634,385	$ 3,023	3,197,334	(170,066)	0	(1,395,906)
Ending Balance (in shares) at Sep. 30, 2022	302,325,853	302,326
Beginning Balance at Mar. 31, 2022	$ 1,576,699	$ 2,994	3,176,177	(235,848)	6,030	(1,372,654)
Beginning Balance (in shares) at Mar. 31, 2022		299,419
Net income (loss)	21,886			21,886
Foreign currency translation adjustment, net of taxes of $0 for all periods	1,678				1,678
Issuance of restricted stock (in shares)		980
Issuance of restricted stock, value		$ 10	(10)
Vesting of restricted stock units (in shares)		1,287
Vesting of restricted stock units		$ 13	(13)
Release of cumulative translation adjustment, net of taxes of $0 and $3,770, into net income (loss) for three and nine months ended September 30, 2022	(7,708)				(7,708)
Exercised		640
Exercise of stock options	10,368	$ 6	10,362
Stock-based compensation	5,162		5,162
Payment of cash dividends	(8,652)			(8,652)
Dividend equivalents	(100)			(100)
Purchase of treasury stock	(23,252)					(23,252)
Ending Balance at Jun. 30, 2022	1,576,081	$ 3,023	3,191,678	(222,714)	0	(1,395,906)
Ending Balance (in shares) at Jun. 30, 2022		302,326
Net income (loss)	61,452			61,452
Foreign currency translation adjustment, net of taxes of $0 for all periods	0
Release of cumulative translation adjustment, net of taxes of $0 and $3,770, into net income (loss) for three and nine months ended September 30, 2022	0
Stock-based compensation	5,656		5,656
Payment of cash dividends	(8,673)			(8,673)
Dividend equivalents	(131)			(131)
Ending Balance at Sep. 30, 2022	$ 1,634,385	$ 3,023	$ 3,197,334	$ (170,066)	$ 0	$ (1,395,906)
Ending Balance (in shares) at Sep. 30, 2022	302,325,853	302,326