Consolidated Statement Of Stockholder's Equity - USD ($) $ in Thousands	Total	Common Stock [Member]	Additional Paid-In Capital [Member]	Retained Deficit [Member]	Accumulated Other Comprehensive Income (Loss) [Member]
Balance, shares at Dec. 31, 2014		100
Balance at Dec. 31, 2014		$ 0	$ 400,177	$ (148,776)	$ 1,688
Increase (Decrease) in Stockholder's Equity [Roll Forward]
Amortization of stock-based compensation costs			328
Net loss	$ (109,990)			(109,990)
Foreign currency translation adjustments	(21,211)				(21,211)
Balance, shares at Dec. 31, 2015		100.0
Balance at Dec. 31, 2015		$ 0	400,505	(258,766)	(19,523)
Increase (Decrease) in Stockholder's Equity [Roll Forward]
Amortization of stock-based compensation costs			77
Net loss	(24,424)			(24,424)
Foreign currency translation adjustments	$ 3,190				3,190
Balance, shares at Dec. 31, 2016	100	100
Balance at Dec. 31, 2016	$ 101,059	$ 0	400,582	(283,190)	(16,333)
Increase (Decrease) in Stockholder's Equity [Roll Forward]
Amortization of stock-based compensation costs			10
Net loss	(31,481)			(31,481)
Foreign currency translation adjustments	$ 7,526				7,526
Balance, shares at Dec. 31, 2017	100	100.0
Balance at Dec. 31, 2017	$ 77,114	$ 0	$ 400,592	$ (314,671)	$ (8,807)