CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS) (Unaudited) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Income Statement [Abstract]
REVENUES, NET	$ 5,601,000	$ 5,760,000	$ 16,915,000	$ 15,960,000
COST OF GOODS SOLD	484,000	248,000	1,408,000	771,000
GROSS PROFIT	5,117,000	5,512,000	15,507,000	15,189,000
OPERATING EXPENSES
Research and development	629,000	725,000	1,835,000	1,778,000
Selling	1,324,000	1,778,000	3,527,000	5,148,000
General and administrative	3,156,000	7,056,000	10,538,000	13,475,000
Total operating expenses	5,109,000	9,559,000	15,900,000	20,401,000
INCOME (LOSS) FROM OPERATIONS	8,000	(4,047,000)	(393,000)	(5,212,000)
OTHER INCOME (EXPENSE)
Loss on debt extinguishment		(438,000)	(1,425,000)	(438,000)
Change in fair value of warrant derivative liabilities	745,000	3,576,000	669,000	3,492,000
Change in fair value of embedded conversion option	45,000	131,000	51,000	131,000
Net gain (loss) on investment in marketable securities	6,464,000	(5,248,000)	7,672,000	(22,242,000)
Gain (loss) on equity method investment	(494,000)	36,000	(1,474,000)	(413,000)
Miscellaneous reverse merger costs		(309,000)		(309,000)
Notes conversion costs		(3,341,000)		(3,341,000)
Interest and other income	718,000	18,000	1,318,000	248,000
Interest expense	(1,608,000)	(8,714,000)	(4,717,000)	(25,153,000)
Total other income (expense)	5,870,000	(14,289,000)	2,094,000	(48,025,000)
INCOME (LOSS) BEFORE INCOME TAXES	5,878,000	(18,336,000)	1,701,000	(53,237,000)
INCOME TAXES	293,000	56,000	80,000	159,000
NET INCOME (LOSS)	5,585,000	(18,392,000)	1,621,000	(53,396,000)
COMPONENTS OF OTHER COMPREHENSIVE INCOME (LOSS)
Foreign currency translation adjustments	(35,000)	5,000	(7,000)	18,000
Other comprehensive income (loss)	(35,000)	5,000	(7,000)	18,000
COMPREHENSIVE INCOME (LOSS)	$ 5,550,000	$ (18,387,000)	$ 1,614,000	$ (53,378,000)
NET INCOME (LOSS) PER COMMON SHARE - BASIC and DILUTED	$ 0.11	$ (0.40)	$ 0.03	$ (1.32)
WEIGHTED-AVERAGE COMMON SHARES OUTSTANDING	48,987,189	46,004,942	48,866,724	40,469,601