CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY (Unaudited) - 9 months ended Sep. 30, 2018 - USD ($) $ in Thousands	Preferred Stock [Member]	Common Stock [Member]	Additional Paid-In Capital [Member]	Accumulated Deficit [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Non-Controlling Interest [Member]	Total
Balance (in shares) at Dec. 31, 2017	478,776	30,222,299
Balance at Dec. 31, 2017		$ 30	$ 36,888	$ (23,412)	$ 4,503	$ 781	$ 18,790
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Compensation expense due to stock option issuances			725				725
Compensation expense due to warrant issuances			70				70
Issuance of common stock and warrants for cash (in shares)		25,376,527
Issuance of common stock and warrants for cash		$ 25	22,222				22,247
Issuance of common stock for services (in shares)		3,683,059
Issuance of common stock for services		$ 4	4,153				4,157
Issuance of common stock for conversion of debt (in shares)		2,030,015
Issuance of common stock for conversion of debt		$ 2	2,166				2,168
Issuance of common stock for conversion of short-term advances (in shares)		3,632,159
Issuance of common stock for conversion of short-term advances		$ 4	2,816				2,820
Issuance of common stock upon exercise of stock options (in shares)		60,000
Issuance of common stock upon exercise of stock options			98				98
Issuance of common stock upon exercise of warrants (in shares)		2,145,641
Issuance of common stock upon exercise of warrants		$ 2	865				867
Issuance of Series B preferred stock for conversion of short-term advances (in shares)	25,000
Issuance of Series B preferred stock for conversion of short-term advances			250				250
Issuance of common stock for conversion of Series E preferred stock (in shares)	(378,776)	757,552
Issuance of common stock for conversion of Series E preferred stock		$ 1	(1)
Issuance of common stock in connection with convertible notes (in shares)		1,489,232
Issuance of common stock in connection with convertible notes		$ 1	1,177				1,178
Repurchase of common stock (in shares)		(54,998)
Repurchase of common stock			(55)				(55)
Beneficial conversion feature in connection with convertible notes			1,008				1,008
Fair value of warrants issued in connection with convertible notes			3,411				3,411
Cash for exchange fees and other financing costs			(1,951)				(1,951)
Non-controlling interest from acquisition of I. AM						33	33
Non-controlling interest from Microphase						(25)	(25)
Comprehensive loss:
Net loss				(20,399)			(20,399)
Preferred deemed dividends			108	(108)
Net unrealized gain on securities available-for-sale, net of income taxes					(6,788)		(6,788)
Foreign currency translation adjustments				(79)	(210)		(210)
Net loss attributable to non-controlling interest						(218)	(218)
Balance (in shares) at Sep. 30, 2018	125,000	69,341,486
Balance at Sep. 30, 2018		$ 69	$ 73,950	$ (43,998)	$ (2,495)	$ 571	$ 28,097