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CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (unaudited) - USD ($)
shares in Thousands, $ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2024
Jun. 30, 2023
Jun. 30, 2024
Jun. 30, 2023
CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (unaudited)        
Revenue, net $ 2,898 $ 4,049 $ 6,022 $ 7,327
Cost of revenue 1,593 1,988 3,464 3,679
Gross profit 1,305 2,061 2,558 3,648
Operating expenses:        
Engineering, research and development 510 650 1,086 1,177
Selling, general and administrative 1,108 1,005 2,536 2,238
Total operating expenses 1,618 1,655 3,622 3,415
Income (loss) from operations (313) 406 (1,064) 233
Other income (expense):        
Other income (expense), net 16 64 48 128
Income (loss) before income taxes (297) 470 (1,016) 361
Income tax expense 10 89 32 171
Net income (loss) (307) 381 (1,048) 190
Net income (loss) applicable to common stockholders $ (407) $ 281 $ (1,248) $ (10)
Earnings (loss) per common share, basic $ (0.04) $ 0.03 $ (0.13) $ 0.00
Earnings (loss) per common share, diluted $ (0.04) $ 0.03 $ (0.13) $ 0.00
Weighted average common shares outstanding - basic 9,860 9,900 9,860 9,915
Weighted average common shares outstanding - diluted 9,860 9,900 9,860 9,915