CONDENSED CONSOLIDATED STATEMENT OF CHANGES IN SHAREHOLDERS' DEFICIT - USD ($) $ in Thousands	Common Stock	Additional Paid-in Capital	Accumulated Other Comprehensive Loss	Accumulated Deficit	Treasury Stock	Total
Balance at Dec. 31, 2017	$ 365	$ 333,738	$ (1,686)	$ (359,772)	$ (696)	$ (28,051)
Balance (in shares) at Dec. 31, 2017	36,372,000					36,372,411
Increase (Decrease) in Shareholders' Equity
Cumulative effect of a change in accounting for revenue recognition (Note A) | ASU 2014-09				759		$ 759
Balance at Jan. 01, 2018	$ 365	333,738	(1,686)	(360,531)	(696)	(28,810)
Balance (in shares) at Jan. 01, 2018	36,372,000
Balance at Dec. 31, 2017	$ 365	333,738	(1,686)	(359,772)	(696)	$ (28,051)
Balance (in shares) at Dec. 31, 2017	36,372,000					36,372,411
Increase (Decrease) in Shareholders' Equity
Net loss				(9,690)		$ (9,690)
Shares based compensation expense		5,905				5,905
Issuance of common stock upon vesting of restricted stock units	$ 5	(5)
Issuance of common stock upon vesting of restricted stock units (in shares)	478,000
Effect of shares withheld to cover taxes		(2,463)				(2,463)
Total other comprehensive loss			(242)			(242)
Balance at Jun. 30, 2018	$ 370	337,175	(1,928)	(370,221)	(696)	$ (35,300)
Balance (in shares) at Jun. 30, 2018	36,850,000					36,850,071
Increase (Decrease) in Shareholders' Equity
Net loss						$ 12,928
Balance at Jun. 30, 2018	$ 370	$ 337,175	$ (1,928)	$ (370,221)	$ (696)	$ (35,300)
Balance (in shares) at Jun. 30, 2018	36,850,000					36,850,071