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CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Revenue:    
Total revenue $ 29,475 $ 17,123
Operating expense:    
Cost of revenue 20,785 11,133
Gross profit 8,690 5,990
Research and development expense 2,235 1,571
Selling, general and administrative expense 3,896 2,934
Income from operations 2,559 1,485
Interest expense (1,154) (496)
Other income, net 952
Income before provision for income taxes 2,357 989
Provision for income taxes 37
Net income $ 2,320 $ 989
Net income per share-basic $ 0.05 $ 0.03
Weighted average number of basic common shares outstanding 45,021,173 38,158,586
Net income per share-diluted $ 0.05 $ 0.03
Weighted average number of diluted common shares outstanding 47,039,173 38,545,586
Product [Member]    
Revenue:    
Total revenue $ 29,325 $ 16,422
Product and Service, Other [Member]    
Revenue:    
Total revenue $ 150 $ 701