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CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited Consolidated Condensed) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Revenue:    
Total revenue $ 8,156 $ 7,072
Cost of revenue 5,988 5,042
Gross profit 2,168 2,030
Operating expense:    
Research and development expense 666 499
Selling, general and administrative expense 1,397 1,034
Income from operations 105 497
Interest expense 43 139
Other income, net (952)
Income before provision for income taxes 62 1,310
Provision for income taxes
Net income $ 62 $ 1,310
Net income per share-basic $ 0.00 $ 0.03
Weighted average number of basic common shares outstanding 48,984,312 38,221,292
Net income per share-diluted $ 0.00 $ 0.03
Weighted average number of diluted common shares outstanding 51,064,312 39,811,292
Product [Member]    
Revenue:    
Total revenue $ 8,046 $ 7,050
Product and Service, Other [Member]    
Revenue:    
Total revenue $ 110 $ 22