Statements of Cash Flows (Unaudited) - USD ($)		3 Months Ended
		Mar. 31, 2020	Mar. 31, 2019
Cash flows from operating activities
Net loss		$ 22,308,000	$ (19,161,000)
Adjustments to reconcile net income to net cash provided by operating activities
Depreciation		413,000	98,000
Amortization of intangible assets		688,000	0
Stock-based compensation		1,113,000	531,000
Non cash lease expense	[1]	148,000	124,000
Gain from equity method investment in SAVSU			232,000
Change in fair value of contingent consideration		(63,000)
Change in fair value of warrant liability		(21,914,000)	19,663,000
Change in operating assets and liabilities
Accounts receivable, trade		(2,929,000)	118,000
Inventories		143,000	(551,000)
Prepaid expenses and other current assets		317,000	6,000
Increase (Decrease) in Accounts Payable, Total		561,000
Accrued expenses and other current liabilities	[1]	304,000	(469,000)
Other		(402,000)	555,000
Net cash provided by operating activities		687,000	1,146,000
Cash flows from investing activities
Purchase of property and equipment		(146,000)
Purchase of assets held for rent, net		(1,081,000)	(156,000)
Net cash used in investing activities		(1,227,000)	(156,000)
Cash flows from financing activities
Proceeds from exercise of common stock options		490,000	161,000
Proceeds from exercise of warrants		9,000	23,000
Other		(7,000)	(7,000)
Net cash provided by financing activities		492,000	177,000
Net increase (decrease) in cash and cash equivalents		(48,000)	1,167,000
Cash and cash equivalents - beginning of period		6,448,000	30,657,000
Cash and cash equivalents - end of period		6,400,000	31,824,000
Non-cash investing and financing activities
Reclassification of warrant liability to equity upon exercise		21,000	73,000
Purchase of property & equipment not yet paid		6,000	46,000
Stock issued as 2019 bonus payout		$ 314,000

[1] Reclass of operating lease liabilities related to updated treatment of leases under ASC 842