Statements of Operations (Unaudited) - USD ($)	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Revenue	$ 12,162,000	$ 5,770,000
Operating expenses
Cost of product and rental revenue (exclusive of intangible assets amortization)	4,568,000	1,647,000
Research and development	1,663,000	359,000
Sales and marketing	1,576,000	837,000
General and administrative	3,135,000	2,153,000
Amortization of intangible assets	688,000	0
Acquisition costs	225,000	208,000
Change in fair value of contingent consideration	(63,000)
Total operating expenses	11,792,000	5,204,000
Operating income (loss)	370,000	566,000
Other income (expense)
Change in fair value of warrant liability	21,914,000	(19,663,000)
Interest income	29,000	171,000
Interest expense	(1,000)	(3,000)
Other expense	(4,000)
Loss from equity method investment in SAVSU		(232,000)
Total other income (expenses)	21,938,000	(19,727,000)
Net income (loss) before provision for income taxes	22,308,000	(19,161,000)
Income tax (benefit)
Net income (loss)	22,308,000	(19,161,000)
Net income attributable to common stockholders:
Basic	18,364,000	(19,161,000)
Diluted	$ (174,000)	$ (19,161,000)
Earnings per share attributable to common stockholders
Basic (in dollars per share)	$ 0.87	$ (1.03)
Diluted (in dollars per share)	$ (0.01)	$ (1.03)
Weighted average shares used to compute earnings per share attributable to common stockholders:
Basic (in shares)	21,010,817	18,648,397
Diluted (in shares)	21,010,817	18,648,397
Product [Member]
Revenue	$ 11,727,000	$ 5,770,000
Rental Revenue [Member]
Revenue	$ 435,000