Consolidated Statements of Shareholders' Equity - USD ($)	Total	Common Stock Issued [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Foreign Currency Adjustment Attributable to Parent [Member]	Parent	Noncontrolling Interest	Treasury Stock, Common
Noncontrolling Interest in Variable Interest Entity							$ 6,063,000
Stockholders' Equity [Roll Forward]
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	$ 558,157,000
Common Stock, Value, Issued at Dec. 31, 2020		$ 27,709,000
Additional Paid in Capital at Dec. 31, 2020			$ 192,492,000
Treasury Stock, Carrying Basis at Dec. 31, 2020								$ (660,021,000)
Retained Earnings at Dec. 31, 2020				$ 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
Stockholders' Equity [Roll Forward]
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)			9,326,000		17,771,000
Restricted stock activity			(10,439,000)					10,439,000
Common Stock, Value, Issued at Dec. 31, 2021		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
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
Net Income	25,941,000					25,941,000
Other Comprehensive Income (Loss), Net of Tax	(19,669,000)				(19,669,000)	(19,669,000)
Other Comprehensive Income	(19,669,000)
Restricted stock unit activity	8,508,000		(11,284,000)			8,508,000		19,792,000
Restricted stock activity			(6,466,000)					6,466,000
Common Stock, Value, Issued at Dec. 31, 2022	27,709,000	27,709,000
Additional Paid in Capital at Dec. 31, 2022			155,858,000
Treasury Stock, Carrying Basis at Dec. 31, 2022								(605,553,000)
Retained Earnings at Dec. 31, 2022	1,327,854,000			1,327,854,000
Accumulated Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Net of Tax at Dec. 31, 2022					(386,127,000)
Balance at Dec. 31, 2022	519,741,000
Noncontrolling Interest in Variable Interest Entity	6,063,000
Stockholders' Equity [Roll Forward]
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	525,804,000
Net Income	97,403,000					97,403,000
Other Comprehensive Income (Loss), Net of Tax	3,787,000				3,787,000	3,787,000
Other Comprehensive Income	3,787,000
Restricted stock unit activity	7,089,000		(19,933,000)			$ 7,089,000		27,022,000
Restricted stock activity			(4,151,000)					4,151,000
Common Stock, Value, Issued at Dec. 31, 2023	27,709,000	$ 27,709,000
Additional Paid in Capital at Dec. 31, 2023			$ 131,774,000
Treasury Stock, Carrying Basis at Dec. 31, 2023								$ (574,380,000)
Retained Earnings at Dec. 31, 2023	1,425,257,000			$ 1,425,257,000
Accumulated Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Net of Tax at Dec. 31, 2023					$ (382,340,000)
Balance at Dec. 31, 2023	628,020,000
Noncontrolling Interest in Variable Interest Entity	6,063,000
Stockholders' Equity [Roll Forward]
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	$ 634,083,000