STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Revenue
Product and service revenue	$ 22,781	$ 26,347
Lease	3,601	4,181
Total revenue	26,382	30,528
Cost of revenue (exclusive of amortization)
Total cost of revenue	12,307	17,299
Operating expenses
Selling, general and administrative expenses	23,768	17,147
Research and development expenses	7,553	7,569
Amortization of intangible assets	1,256	1,227
Operating loss	(18,502)	(12,714)
Other income (expense)
Interest expense	(1,340)	(2,001)
Other income, net	68	58
Net loss attributable to common stockholders	$ (19,774)	$ (14,657)
Net loss per share attributable to common stockholders
Basic and diluted	$ (4.28)	$ (13.70)
Weighted-average number of shares used in calculation of net loss per share:
Basic and diluted	4,621	1,070
Product
Revenue
Product and service revenue	$ 19,831	$ 23,254
Cost of revenue (exclusive of amortization)
Total cost of revenue	8,303	12,030
Service
Revenue
Product and service revenue	2,950	3,093
Cost of revenue (exclusive of amortization)
Total cost of revenue	2,868	3,005
Lease
Cost of revenue (exclusive of amortization)
Total cost of revenue	$ 1,136	$ 2,264