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UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Income Statement [Abstract]    
Revenue $ 2,313 $ 3,622
Cost of goods sold 2,192 2,471
Gross profit 121 1,151
Operating expenses:    
Sales and marketing 1,116 1,312
Research and product development 691 894
General and administrative 1,160 1,023
Total operating expenses 2,967 3,229
Operating loss (2,846) (2,078)
Interest income (expense) 0 0
Other income, net 12 178
Loss before income taxes (2,834) (1,900)
Provision (benefit) for income taxes 0 (2)
Net loss $ (2,834) $ (1,898)
Basic weighted average shares outstanding (in shares) 24,748,551 23,969,148
Diluted weighted average shares outstanding (in shares) 24,748,551 23,969,148
Basic loss per share (in dollars per share) $ (0.11) $ (0.08)
Diluted loss per share (in dollars per share) $ (0.11) $ (0.08)
Comprehensive loss:    
Net loss $ (2,834) $ (1,898)
Unrealized gain on available-for-sale securities, net of tax 0 22
Change in foreign currency translation adjustment (13) (2)
Comprehensive loss $ (2,847) $ (1,878)