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Consolidated Statements of Operations - USD ($)
shares in Thousands, $ in Thousands
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Revenue $ 25,813 $ 16,447
Cost of revenue 19,186 13,370
Gross profit 6,627 3,077
Operating expenses:    
Research and development 1,906 1,785
Selling 1,216 864
General and administrative 5,328 5,092
Total operating expenses 8,450 7,741
Operating loss (1,823) (4,664)
Other income (expense):    
Interest income 162 6
Interest expenses (8) (261)
Employee retention credits 1,529 0
Foreign exchange loss (95) (143)
Gain on sale of building 0 6,894
Gain on debt extinguishment 0 2,443
Other income 15 500
Total other income, net 1,603 9,439
(Loss) income before income tax (220) [1] 4,775
Income tax expense 4 28
Net (loss) income $ (224) $ 4,747
Income (loss) per common share:    
Basic (in dollars per share) $ (0.03) $ 0.71
Diluted (in dollars per share) $ (0.03) $ 0.71
Weighted average number of shares:    
Basic (in shares) 6,734 6,688
Diluted (in shares) 6,734 6,704
[1] Includes other income related to ERCs of $1,103, $303 and $123 for the CVD, SDC and Materials segments, respectively.