Condensed Consolidated Statement of Stockholder's Equity - USD ($) $ in Thousands	Total	Common Stock [Member]	Additional Paid-In Capital [Member]	Retained Deficit [Member]	Accumulated Other Comprehensive Loss [Member]
Increase (Decrease) in Stockholder's Equity [Roll Forward]
Impact of adoption of new accounting standard				$ 191
Balance (in shares) at Dec. 31, 2017	100	100
Balance at Dec. 31, 2017	$ 77,114	$ 0	$ 400,592	(314,671)	$ (8,807)
Increase (Decrease) in Stockholder's Equity [Roll Forward]
Amortization of stock-based compensation costs			3
Net loss	(11,714)			(11,714)
Foreign currency translation adjustments	$ (5,565)				(5,565)
Balance (in shares) at Jun. 30, 2018	100	100.0
Balance at Jun. 30, 2018	$ 60,029	$ 0	$ 400,595	$ (326,194)	$ (14,372)