CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Sales
Total sales	$ 3,295	$ 2,635
Cost of sales
Total cost of sales	1,941	1,480
Gross margin	1,354	1,155
Operating Expenses:
Research and development	5,570	5,461
General and administrative	4,430	6,182
Sales and marketing	2,004	2,547
Total operating expenses	12,004	14,190
Loss from operations	(10,650)	(13,035)
Interest income	796	869
Other income, net	6	6
Loss before provision for income taxes	(9,848)	(12,160)
Provision for income taxes	0	0
Net loss and comprehensive loss	$ (9,848)	$ (12,160)
Earnings Per Share, Basic	$ (0.14)	$ (0.17)
Earnings Per Share, Diluted	$ (0.14)	$ (0.17)
Denominator for Basic EPS - Weighted-average common stock	71,934,045	70,864,226
Denominator for Dilutive EPS - Weighted-average common stock	71,934,045	70,864,226
Device
Sales
Total sales	$ 2,704	$ 2,132
Cost of sales
Total cost of sales	1,499	1,071
Service
Sales
Total sales	591	503
Cost of sales
Total cost of sales	$ 442	$ 409