STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Revenue
Product and service revenue	$ 29,443	$ 29,493
Lease	5,915	4,966
Total revenue	35,358	34,459
Cost of revenue (exclusive of amortization)
Total cost of revenue	15,403	16,626
Operating expenses
Selling, general and administrative expenses	27,170	23,887
Research and development expenses	11,814	12,358
Amortization of intangible assets	1,148	1,240
Operating loss	(20,177)	(19,652)
Other income (expense)
Other income, net	263	51
Net loss	$ (19,914)	$ (19,601)
Net loss per share
Basic	$ (1.96)	$ (2.09)
Diluted	$ (1.96)	$ (2.09)
Weighted-average number of shares used in calculation of net loss per share:
Basic	10,159	9,374
Diluted	10,159	9,374
Product
Revenue
Product and service revenue	$ 25,959	$ 26,246
Cost of revenue (exclusive of amortization)
Total cost of revenue	8,910	11,845
Service
Revenue
Product and service revenue	3,484	3,247
Cost of revenue (exclusive of amortization)
Total cost of revenue	4,552	3,406
Lease
Cost of revenue (exclusive of amortization)
Total cost of revenue	$ 1,941	$ 1,375