CONSOLIDATED STATEMENTS OF SHAREHOLDERS' DEFICIT - USD ($) $ in Thousands	Series A Preferred Stock	Series A-1 Preferred Stock	Series B Preferred Stock	Common Stock	Treasury Stock	Additional Paid-In Capital	Accumulated Other Comprehensive Loss	Accumulated Deficit	Total
Beginning balance, shares at Dec. 31, 2019	37,467	0	239,400	113,353,176	(6,704)
Beginning balance, amount at Dec. 31, 2019	$ 0	$ 0	$ 2	$ 1,133	$ (64)	$ 195,079	$ (1,741)	$ (203,171)	$ (8,762)
Accretion of preferred stock discount	0	0	0	0	0	(175)	0	0	(175)
Stock-based compensation expense and issuance of RSUs, amount	0	0	0	$ 0	0	124	0	0	124
Issuance of common stock in lieu of cash, shares				10,000,000
Issuance of common stock in lieu of cash, amount	0	0	0	$ 100	0	1,287	0	0	1,387
Common stock issued in exchange for unexercised options, shares				400,000
Common stock issued in exchange for unexercised options, amount	0	0	0	$ 4	0	58	0	0	62
Foreign currency translation adjustment	0	0	0	0	0	0	31	0	31
Dividends on Series A preferred stock, amount	0	0	0	0	0	0	0	(937)	(937)
Dividends on Series C preferred stock, amount	0	0	0	0	0	0	0	(250)	(250)
Net loss	$ 0	$ 0	$ 0	$ 0	$ 0	0	0	(3,124)	(3,124)
Ending balance, shares at Mar. 31, 2020	37,467	0	239,400	123,753,176	(6,704)
Ending balance, amount at Mar. 31, 2020	$ 0	$ 0	$ 2	$ 1,237	$ (64)	196,373	(1,710)	(207,482)	(11,644)
Beginning balance, shares at Dec. 31, 2020	14,911	14,782	239,400	180,096,317	(6,704)
Beginning balance, amount at Dec. 31, 2020	$ 1	$ 0	$ 2	$ 1,801	$ (64)	193,652	(1,989)	(213,225)	(19,823)
Accretion of preferred stock discount	0	0	0	$ 0	0	(1,817)	0	0	(1,817)
Stock-based compensation expense and issuance of RSUs, shares				161,168
Stock-based compensation expense and issuance of RSUs, amount	0	0	0	$ 2	0	76	0	0	78
Issuance of common stock in lieu of cash, shares				242,647
Issuance of common stock in lieu of cash, amount	0	0	0	$ 2	0	19	0	0	21
Issuance of common stock pursuant to warrant exercise, shares				400
Issuance of common stock pursuant to warrant exercise, amount	$ 0	0	0	$ 0	0	0	0	0	0
Conversion of Series A Preferred to Common Stock, shares	(8,762)			43,819,500
Conversion of Series A Preferred to Common Stock, amount	$ 0	$ 0	0	$ 438	0	(438)	0	0	0
Conversion of Series A-1 Preferred to Common Stock, shares		(8,860)		44,300,000
Conversion of Series A-1 Preferred to Common Stock, amount	0	$ 0	0	$ 443	0	(443)	0	0	0
Conversion of Series D Preferred to Common Stock, shares				6,115,324
Conversion of Series D Preferred to Common Stock, amount	0	0	0	$ 59	0	630	0	(2)	687
Foreign currency translation adjustment	0	0	0	$ 0	0	0	54	0	54
Dividends on Series A preferred stock, shares				1,050,826
Dividends on Series A preferred stock, amount				$ 11	0	81	0	(92)	0
Dividends on Series A-1 preferred stock, shares				963,266
Dividends on Series A-1 preferred stock, amount				$ 10	0	73	0	(83)	0
Dividends on Series D preferred stock, amount	0	0	0	0	0	(248)	0	0	(248)
Net loss	$ 0	$ 0	$ 0	$ 0	$ 0	0	0	(1,885)	(1,885)
Ending balance, shares at Mar. 31, 2021	6,149	5,922	239,400	276,749,448	(6,704)
Ending balance, amount at Mar. 31, 2021	$ 0	$ 0	$ 2	$ 2,766	$ (64)	$ 191,585	$ (1,935)	$ (215,287)	$ (22,933)