CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY - USD ($) $ in Thousands		Total	Common Stock	Additional Paid-In Capital	Accumulated Deficit	Accumulated Other Comprehensive Loss	Treasury Stock	Noncontrolling Interests
Beginning balance, Shares at Dec. 31, 2014			10,965,606
Beginning balance at Dec. 31, 2014		$ 135,712	$ 110	$ 889,284	$ (734,409)	$ (12,807)	$ (6,565)	$ 99
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss) income	[1]	(25,118)			(25,122)			4
Translation adjustment		(1,996)				(1,974)		(22)
Stock-based compensation expense		5,486		5,486
Vesting of restricted stock units/ awards, Shares			29,191
Vesting of restricted stock units/awards		0
Purchase of treasury shares, Shares			(296,488)
Purchase of treasury shares		(1,989)	$ (3)				(1,986)
Restricted stock cancelled for employee minimum income taxes, Shares			(6,208)
Restricted stock cancelled for employee minimum income taxes		(126)		(126)
Issuance of stock for the ESPP, Shares			10,588
Issuance of stock for the ESPP		215		215
Purchase of subsidiary shares from noncontrolling interest		(144)		(144)
Ending balance, Shares at Dec. 31, 2015	[2]		10,702,689.000
Ending balance at Dec. 31, 2015	[2]	112,040	$ 107	894,715	(759,531)	(14,781)	(8,551)	81
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss) income	[1]	(64,727)			(65,148)			421
Translation adjustment		(6,960)				(6,967)		7
Stock-based compensation expense		3,267		3,267
Vesting of restricted stock units/ awards, Shares			40,495
Vesting of restricted stock units/awards		0
Purchase of treasury shares, Shares			(155,304)
Purchase of treasury shares		(964)	$ (1)				(963)
Restricted stock cancelled for employee minimum income taxes, Shares			(4,973)
Restricted stock cancelled for employee minimum income taxes		(22)		(22)
Issuance of stock for the ESPP, Shares			4,100
Issuance of stock for the ESPP		23		23
Issuance of stock in bond exchange, Shares			1,205,440
Issuance of stock in bond exchange		10,741	$ 12	1,215			9,514
Ending balance, Shares at Dec. 31, 2016			11,792,447.000
Ending balance at Dec. 31, 2016		53,398	$ 118	899,198	(824,679)	(21,748)	0	509
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss) income		(29,377)			(30,242)			865
Translation adjustment		2,834				2,869		(35)
Dividend payment to non-controlling interest		(100)						(100)
Stock-based compensation expense		$ 2,552		2,552
Exercise of stock options, Shares		15,000	15,000
Exercise of stock options		$ 46		46
Vesting of restricted stock units/ awards, Shares			115,576
Vesting of restricted stock units/awards		0	$ 1	(1)
Restricted stock cancelled for employee minimum income taxes, Shares			(23,889)
Restricted stock cancelled for employee minimum income taxes		(120)		(120)
Employee purchases of unregistered shares of common stock, Shares			120,567
Employee purchases of unregistered shares of common stock		1,573	$ 1	1,572
Ending balance, Shares at Dec. 31, 2017			12,019,701.000
Ending balance at Dec. 31, 2017		$ 30,806	$ 120	$ 903,247	$ (854,921)	$ (18,879)	$ 0	$ 1,239

[1] Net income attributable to noncontrolling interests for 2015 excludes less than $(0.1) million related to the redeemable noncontrolling interests, which is reported in the mezzanine equity section of the Consolidated Balance Sheet.

[2] The figures for 2015, set forth in the tables above have been retroactively adjusted to reflect the one-for-fifteen reverse stock split completed on February 4, 2016.