Consolidated Statements of Cash Flows - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Cash flows from operating activities
Net loss	$ (1,657,000)	$ (25,005,000)
Adjustments to reconcile net income to net cash provided by operating activities
Depreciation	718,000	338,000
Amortization of intangible assets	1,079,000
Stock-based compensation	3,043,000	1,519,000
Non cash lease expense	512,000
Loss from equity method investment in SAVSU	739,000	672,000
Gain on acquisition of SAVSU	(10,108,000)
Change in fair value of contingent consideration	50,000
Deferred income tax benefit	(1,541,000)
Change in fair value of warrant liability	12,835,000	28,271,000
Other	15,000	(127,000)
Change in operating assets and liabilities
Accounts receivable, trade, net	(290,000)	(2,024,000)
Inventories	(3,777,000)	(1,662,000)
Prepaid expenses and other current assets	(704,000)	(104,000)
Accounts payable	768,000	(11,000)
Accrued expenses and other current liabilities	(246,000)	497,000
Other liabilities	(81,000)
Other	(142,000)	(16,000)
Net cash provided by operating activities	1,213,000	2,348,000
Cash flows from investing activities
Investment in Sexton	(1,500,000)
Investment in iVexSol convertible debt	(1,000,000)
Purchase of property and equipment	(675,000)	(500,000)
Purchase of assets held for lease	(1,655,000)
Investment in SAVSU		(6,000,000)
Net cash used in investing activities	(27,018,000)	(6,500,000)
Cash flows from financing activities
Stock issue from private equity transaction		20,000,000
Proceeds from exercise of common stock options	1,181,000	508,000
Proceeds from exercise of warrants	574,000	12,392,000
Payments for redemption of preferred stock		(4,250,000)
Payments of preferred stock dividends		(436,000)
Other	(159,000)	(68,000)
Net cash provided by financing activities	1,596,000	28,146,000
Net increase (decrease) in cash and cash equivalents	(24,209,000)	23,994,000
Cash and cash equivalents – beginning of year	30,657,000	6,663,000
Cash and cash equivalents – end of year	6,448,000	30,657,000
Non-cash investing and financing activities
Purchase of property and equipment not yet paid	29,000	54,000
Stock issued for services in prior period included in liabilities at prior year-end		36,000
Reclassification of warrant liabilities to equity upon exercise	1,749,000	19,378,000
Receivables converted to equity investment in SAVSU		150,000
Purchase of equipment with debt		18,000
Legal fees for private equity transaction not yet paid		44,000
SAVSU [Member]
Cash flows from investing activities
Cash acquired in acquisition of SAVSU	1,251,000
Non-cash investing and financing activities
Stock consideration	19,932,000
Astero [Member]
Cash flows from investing activities
Acquisition of Astero Bio, net of cash acquired	(12,439,000)
CBS Acquisition [Member]
Cash flows from investing activities
Acquisition of Astero Bio, net of cash acquired	(11,000,000)
Non-cash investing and financing activities
Stock consideration	$ 4,000,000