Condensed Consolidated Statements of Changes in Mezzanine Equity and Stockholders' Equity - USD ($)	Total	Registered Direct Offering	Series 4 Convertible Preferred Stock	Series 5 Convertible Preferred Stock	Common Stock	Common Stock Registered Direct Offering	Additional Paid-In Capital	Additional Paid-In Capital Registered Direct Offering	Treasury Stock	Accumulated Other Comprehensive Income (Loss)	Accumulated Deficit	Non-Controlling Interest	Series 7 Convertible Preferred Stock	Series 7 Convertible Preferred Stock Additional Paid-In Capital	Series 8 Convertible Preferred Stock	Series 8 Convertible Preferred Stock Additional Paid-In Capital
Balance, beginning (in shares) at Dec. 31, 2020			1	126	53,178,462				1
Balance, beginning at Dec. 31, 2020	$ 44,680,000				$ 53,000		$ 225,613,000		$ (695,000)	$ 660,000	$ (180,992,000)	$ 41,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common shares issued for extinguishment of debt (in shares)					893,921
Common shares issued for extinguishment of debt					$ 1,000		1,499,000
Common shares issued for stock options exercised (in shares)					4,977
Stock options granted to employees and consultants for services	5,096,000						5,096,000
Shares issued for cash / offering (in shares)						15,800,000
Shares issued for cash / offering	1,500,000	$ 74,074,000				$ 16,000		$ 74,058,000
Common shares issued for net proceeds from warrants exercised (in shares)					31,505,088
Common shares issued for net proceeds from warrants exercised	3,779,000				$ 32,000		3,747,000
Cumulative translation adjustment	(671,000)									(671,000)
Net loss	(12,539,000)										(12,557,000)	18,000
Balance, ending (in shares) at Mar. 31, 2021			1	126	101,382,448				1
Balance, ending at Mar. 31, 2021	115,919,000				$ 102,000		310,013,000		$ (695,000)	(11,000)	(193,549,000)	59,000
Increase (Decrease) in Temporary Equity [Roll Forward]
Convertible preferred stock, beginning balance (in shares)													49,250		0
Convertible preferred stock, beginning balance													$ 44,695,000		$ 0
Preferred stock redeemed for cash (in shares)													(49,250)
Series 7 Preferred redeemed for cash													$ (49,250,000)
Preferred stock issued for cash (in shares)															53,197.7234
Preferred stock issued for cash															$ 41,577,000
Accretion discount - preferred shares													$ 4,555,000		548,000
Deemed dividend for the modification related to Series 8 Preferred Stock															2,627,000
Deemed contribution for the modification related to Warrants issued in connection with Series 8 Preferred Stock															(1,469,000)
Amortization Premium- modification related to Series 8 embedded warrants															$ (110,000)
Convertible preferred stock, ending balance (in shares) at Mar. 31, 2022													0		53,197.7234
Convertible preferred stock, ending balance at Mar. 31, 2022													$ 0		$ 43,173,000
Balance, beginning (in shares) at Dec. 31, 2021			1	126	124,440,924				(1)
Balance, beginning at Dec. 31, 2021	$ 83,491,000		$ 0	$ 0	$ 124,000		332,639,000		$ (695,000)	44,000	(250,309,000)	1,688,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common shares issued for extinguishment of debt (in shares)	4,310,245				4,310,245
Common shares issued for extinguishment of debt	$ 1,500,000				$ 4,000		1,496,000
Common shares issued for stock options exercised (in shares)	0
Stock options granted to employees and consultants for services	$ 1,533,000						1,533,000
Shares issued for cash / offering	5,329,000						5,329,000
Accretion discount - preferred shares													$ (4,555,000)	$ (4,555,000)	$ (548,000)	$ (548,000)
Deemed dividend for the modification related to Series 8 Preferred Stock	(2,627,000)						(2,627,000)
Deemed contribution for the modification related to Warrants issued in connection with Series 8 Preferred Stock	1,469,000						1,469,000
Amortization Premium- modification related to Series 8 embedded warrants	110,000						110,000
Restricted stock grants withheld for taxes (in shares)					(960,106)
Restricted stock grants withheld for taxes	(336,000)				$ (1,000)		(335,000)
Common shares issued for CXApp earnout (in shares)					10,873,886
Common shares issued for CXApp earnout	3,697,000				$ 11,000		3,686,000
Common shares issued for net proceeds from warrants exercised (in shares)					13,811,407
Common shares issued for net proceeds from warrants exercised	0				$ 14,000		(14,000)
Cumulative translation adjustment	(102,000)									(102,000)	(15,000)	15,000
Net loss	(11,557,000)										(11,211,000)	(346,000)
Balance, ending (in shares) at Mar. 31, 2022			1	126	152,476,356				(1)
Balance, ending at Mar. 31, 2022	$ 77,404,000		$ 0	$ 0	$ 152,000		$ 338,183,000		$ (695,000)	$ (58,000)	$ (261,535,000)	$ 1,357,000
Increase (Decrease) in Temporary Equity [Roll Forward]
Convertible preferred stock, beginning balance (in shares)													0		53,197.7234
Convertible preferred stock, beginning balance													$ 0		$ 43,173,000