Consolidated Statements of Shareholders' Equity - USD ($)	Total	Retained Earnings [Member]	Parent	Common Stock Issued [Member]	Additional Paid-in Capital [Member]	Treasury Stock [Member]	Retained Earnings [Member]	Accumulated Foreign Currency Adjustment Attributable to Parent [Member]	Parent	Noncontrolling Interest
Stockholders' Equity [Roll Forward]
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	$ 1,415,298,000									$ 6,063,000
Common Stock, Value, Issued at Dec. 31, 2018				$ 27,709,000
Additional Paid in Capital at Dec. 31, 2018					$ 220,421,000
Treasury Stock, Carrying Basis at Dec. 31, 2018						$ (704,066,000)
Retained Earnings at Dec. 31, 2018							$ 2,204,548,000
Accumulated Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Net of Tax at Dec. 31, 2018								$ (339,377,000)
Balance at Dec. 31, 2018	1,409,235,000
Stockholders' Equity [Roll Forward]
Net Income	(348,444,000)								$ (348,444,000)
Other Comprehensive Income (Loss), Net of Tax	5,280,000							5,280,000	5,280,000
Other Comprehensive Income	5,280,000
Restricted stock unit activity	9,135,000				(8,148,000)	17,283,000			9,135,000
Restricted stock activity					(5,143,000)	5,143,000
Common Stock, Value, Issued at Dec. 31, 2019				27,709,000
Additional Paid in Capital at Dec. 31, 2019					207,130,000
Stockholders' Equity [Roll Forward]
Stockholders' Equity, Other	(5,860,000)	$ (5,860,000)	$ (5,860,000)
Treasury Stock, Carrying Basis at Dec. 31, 2019						(681,640,000)
Retained Earnings at Dec. 31, 2019							1,850,244,000
Accumulated Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Net of Tax at Dec. 31, 2019								(334,097,000)
Balance at Dec. 31, 2019	1,069,346,000
Stockholders' Equity [Roll Forward]
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	1,075,409,000									$ 6,063,000
Net Income	(496,751,000)								(496,751,000)
Other Comprehensive Income (Loss), Net of Tax	(25,209,000)							(25,209,000)	(25,209,000)
Other Comprehensive Income	(25,209,000)
Restricted stock unit activity	6,981,000				(8,646,000)	15,627,000			6,981,000
Restricted stock activity	0				(5,992,000)	5,992,000
Common Stock, Value, Issued at Dec. 31, 2020	27,709,000			27,709,000
Additional Paid in Capital at Dec. 31, 2020					192,492,000
Stockholders' Equity [Roll Forward]
Stockholders' Equity, Other	(2,273,000)	$ (2,273,000)	$ (2,273,000)
Treasury Stock, Carrying Basis at Dec. 31, 2020						(660,021,000)
Retained Earnings at Dec. 31, 2020	1,351,220,000						1,351,220,000
Accumulated Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Net of Tax at Dec. 31, 2020								(359,306,000)
Balance at Dec. 31, 2020	552,094,000
Noncontrolling Interest in Variable Interest Entity	6,063,000
Stockholders' Equity [Roll Forward]
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	558,157,000
Net Income	(49,307,000)								(49,307,000)
Other Comprehensive Income (Loss), Net of Tax	(7,152,000)							(7,152,000)	(7,152,000)
Other Comprehensive Income	(7,152,000)
Restricted stock unit activity	9,326,000				(8,445,000)	17,771,000			$ 9,326,000
Restricted stock activity					(10,439,000)	10,439,000
Common Stock, Value, Issued at Dec. 31, 2021	27,709,000			$ 27,709,000
Additional Paid in Capital at Dec. 31, 2021					$ 173,608,000
Treasury Stock, Carrying Basis at Dec. 31, 2021						$ (631,811,000)
Retained Earnings at Dec. 31, 2021	1,301,913,000						$ 1,301,913,000
Accumulated Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Net of Tax at Dec. 31, 2021								$ (366,458,000)
Balance at Dec. 31, 2021	504,961,000
Noncontrolling Interest in Variable Interest Entity	6,063,000
Stockholders' Equity [Roll Forward]
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	$ 511,024,000