Consolidated Statements of Owners' Equity - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-In Capital	Accumulated Deficit
Beginning balance (shares) at Dec. 31, 2012		20,257,625
Beginning balance at Dec. 31, 2012	$ 207,130	$ 20	$ 207,110	$ 0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(1,227)			(1,227)
Share-based compensation	1,169		1,169
Repurchase of vested share-based awards	(318)		(318)
Conversion to accounting for stock option awards as liabilities	(2,235)		(2,235)
Shares issued under share-based compensation plans (shares)		31,374
Shares forfeited, canceled or expired (shares)		(45,737)
Ending balance (shares) at Dec. 31, 2013		20,243,262
Ending balance at Dec. 31, 2013	204,519	$ 20	205,726	(1,227)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(23,677)			(23,677)
Share-based compensation	455		455
Canceled liability stock option awards	$ 1,158		1,158
Shares issued under share-based compensation plans (shares)		60,455
Shares forfeited, canceled or expired (shares)		(3,253)
Ending balance (shares) at Dec. 31, 2014	20,300,464	20,300,464
Ending balance at Dec. 31, 2014	$ 182,455	$ 20	207,339	(24,904)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(13,096)			(13,096)
Share-based compensation	971		971
Repurchase of vested share-based awards	$ (71)		(71)
Shares issued under share-based compensation plans (shares)		84,101
Shares forfeited, canceled or expired (shares)		(7,318)
Ending balance (shares) at Dec. 31, 2015	20,377,247	20,377,247
Ending balance at Dec. 31, 2015	$ 170,259	$ 20	$ 208,239	$ (38,000)