UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Income Statement [Abstract]
Revenue	$ 3,622	$ 4,178
Cost of goods sold	2,471	2,863
Gross profit	1,151	1,315
Operating expenses:
Sales and marketing	1,312	1,192
Research and product development	894	1,043
General and administrative	1,023	1,269
Total operating expenses	3,229	3,504
Operating loss	(2,078)	(2,189)
Interest expense	0	(292)
Other income, net	178	1,666
Loss before income taxes	(1,900)	(815)
Provision for income taxes	(2)	17
Net loss	$ (1,898)	$ (832)
Basic weighted average shares outstanding (in shares)	23,969,148	23,955,767
Diluted weighted average shares outstanding (in shares)	23,969,148	23,955,767
Basic loss per share (in dollars per share)	$ (0.08)	$ (0.03)
Diluted loss per share (in dollars per share)	$ (0.08)	$ (0.03)
Comprehensive loss:
Net loss	$ (1,898)	$ (832)
Unrealized gain on available-for-sale securities, net of tax	22	0
Change in foreign currency translation adjustment	(2)	5
Comprehensive loss	$ (1,878)	$ (827)