CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) shares in Thousands, $ in Thousands		Common Stock [Member]		Treasury Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	AOCI Including Portion Attributable to Noncontrolling Interest [Member]	Noncontrolling Interest [Member]	Parent [Member]	Total	[1]
Balance at Dec. 31, 2017		$ 3	[1]	$ (24,000)	$ 215,833	$ (85,233)	$ (13,059)	$ 969	$ 94,513	$ 93,544
Balance (in Shares) at Dec. 31, 2017	[1]	2,696
Stock-based compensation expense					2,434				2,434	2,434
Stock-based compensation expense (in Shares)	[1]	225
Repurchase of common stock for employee tax withholding					(85)				(85)	(85)
Repurchase of common stock for employee tax withholding (in Shares)	[1]	(4)
Net income (loss)						(42,368)		(57)	(42,425)	(42,368)
Foreign currency translation adjustment							(2,788)		(2,788)	(2,788)
Balance at Dec. 31, 2018		$ 3	[1]	(24,000)	218,182	(127,601)	(15,847)	912	51,649	50,737
Balance (in Shares) at Dec. 31, 2018	[1]	2,917
Stock-based compensation expense					2,868				2,868	2,868
Stock-based compensation expense (in Shares)	[1]	355
Common stock issuance		$ 1	[1]		4,213				4,214	4,214
Common stock issuance (in Shares)	[1]	585
Treasury shares retirement				$ 24,000	(24,000)
Treasury shares retirement (in Shares)	[1]	(311)
Retirement of restricted stock (in Shares)	[1]	(6)
Repurchase of common stock for employee tax withholding					(273)				(273)	(273)
Repurchase of common stock for employee tax withholding (in Shares)	[1]	(19)
Preferred stock accrued dividends					(483)				(483)	(483)
Net income (loss)						(55,548)		169	(55,379)	(55,548)
Foreign currency translation adjustment							1,425		1,425	1,425
Balance at Dec. 31, 2019		$ 4	[1]		200,507	(183,149)	(14,422)	1,081	4,021	2,940	[2]
Balance (in Shares) at Dec. 31, 2019	[1]	3,521
Stock-based compensation expense					2,303				2,303	2,303
Stock-based compensation expense (in Shares)	[1]	64
Conversion of convertible senior notes		$ 2	[1]		20,210				20,212	20,212
Conversion of convertible senior notes (in Shares)	[1]	2,127
Repurchase of common stock for employee tax withholding					(174)				(174)	(174)
Repurchase of common stock for employee tax withholding (in Shares)	[1]	(17)
Preferred stock accrued dividends					(1,257)				(1,257)	(1,257)
Net income (loss)						(14,274)		130	(14,144)	(14,274)
Foreign currency translation adjustment							1,976		1,976	1,976
Adjustment to additional paid-in capital					1				1	1
Balance at Dec. 31, 2020		$ 6	[1]		$ 221,590	$ (197,423)	$ (12,446)	$ 1,211	$ 12,938	$ 11,727	[2]
Balance (in Shares) at Dec. 31, 2020	[1]	5,695

[1] After giving effect to a 1 for 10 reverse stock split effective July 9, 2020.

[2] After giving effect to a 1 for 10 reverse stock split effective July 9, 2020.