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CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (unaudited) - USD ($)
shares in Thousands, $ in Thousands
 3 Months Ended
Mar. 31, 2024
Mar. 31, 2023
CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (unaudited)    
Revenue, net $ 3,124 $ 3,278
Cost of revenue 1,871 1,691
Gross profit 1,253 1,587
Operating expenses:    
Engineering, research and development 576 527
Selling, general and administrative 1,428 1,233
Total operating expenses 2,004 1,760
Loss from operations (751) (173)
Other income (expense):    
Other income (expense), net 32 64
Loss before income taxes (719) (109)
Income tax expense 22 82
Net loss (741) (191)
Net loss applicable to common stockholders $ (841) $ (291)
Earnings (loss) per common share, basic $ (0.09) $ (0.03)
Earnings (loss) per common share, diluted $ (0.09) $ (0.03)
Weighted average common shares outstanding - basic 9,860 9,915
Weighted average common shares outstanding - diluted 9,860 9,915