Consolidated Statements of Shareholders' Deficit - USD ($) $ in Thousands		Total	Cumulative Effect, Period of Adoption, Adjustment	[2]	Common Stock	Additional Paid-in- Capital	Accumulated Other Comprehensive Income (Loss)	Treasury Stock	Retained Earnings	Retained Earnings Cumulative Effect, Period of Adoption, Adjustment	[2]
Beginning balance (in shares) at Dec. 31, 2017					56,679,968
Beginning balance at Dec. 31, 2017		$ (258,601)			$ 951	$ 182,448	$ (4,699)	$ (1,064,573)	$ 627,272
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income		216,355							216,355
Other comprehensive income (loss)		(747)					(747)
Share based payment activity (in shares)					918,397
Share based payment activity		56,349				30,722		25,627
Dividends declared ($0.215 per share)		(48,449)							(48,449)
Treasury purchases (in shares)					(1,919,158)
Treasury purchases		(148,679)						(148,679)
Ending balance (in shares) at Dec. 31, 2018					55,679,207
Ending balance at Dec. 31, 2018		$ (183,772)			$ 951	213,170	(5,446)	(1,187,625)	795,178
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Accounting Standards Update [Extensible List]		us-gaap:AccountingStandardsUpdate201613Member
Net income		$ 222,878							222,878
Other comprehensive income (loss)		896					896
Share based payment activity (in shares)					654,694
Share based payment activity		38,056				19,698		18,358
Dividends declared ($0.215 per share)		(48,609)							(48,609)
Treasury purchases (in shares)					(631,273)
Treasury purchases		(50,638)						(50,638)
Other	[1]	$ (2,322)				(1,708)			(614)
Ending balance (in shares) at Dec. 31, 2019		55,702,628			55,702,628
Ending balance at Dec. 31, 2019		$ (23,511)	$ (6,831)		$ 951	231,160	(4,550)	(1,219,905)	968,833	$ (6,831)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income		75,387							75,387
Other comprehensive income (loss)		(96)					(96)
Share based payment activity (in shares)	[3]				506,953
Share based payment activity	[3]	17,201				2,761		14,877	(437)
Dividends declared ($0.215 per share)	[3]	(12,452)							(12,452)
Treasury purchases (in shares)					(674,027)
Treasury purchases		$ (55,450)						(55,450)
Ending balance (in shares) at Dec. 31, 2020		55,535,554			55,535,554
Ending balance at Dec. 31, 2020		$ (5,752)			$ 951	$ 233,921	$ (4,646)	$ (1,260,478)	$ 1,024,500

[1] (1) Impacts of i) adoption of Topic 606 related to a foreign joint venture accounted for as an equity method investment on Retained Earnings and ii) transaction resulting in an increase in ownership of a consolidated joint venture on Additional Paid-in-Capital.

[2] (2) Reflects the cumulative effect of Topic 326, which was adopted on January 1, 2020. Refer to Note 1 for additional details.

[3] (3) During the fourth quarter of 2019, the Company's board of directors announced a 5% increase to the quarterly dividend rate to $0.225 per share from $0.215 per share, beginning with the dividend payable in the first quarter of 2020. On February 28, 2020, the Company’s board of directors declared a quarterly cash dividend of $0.225 per share of common stock. The dividend was payable on April 16, 2020 to shareholders of record on April 2, 2020. Subsequent to the payment of the dividend, in light of uncertainty resulting from the COVID-19 pandemic, we suspended future, undeclared dividends while the pandemic is significantly impacting travel. During 2020, accumulated dividends were paid to certain shareholders upon vesting of certain performance-based stock grants which are captured in Share based payment activity.