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CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited Consolidated Condensed) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2023
Sep. 30, 2022
Sep. 30, 2023
Sep. 30, 2022
Revenue:        
Total revenue $ 7,958 $ 9,678 $ 29,286 $ 29,056
Operating expense:        
Cost of revenue 6,428 7,185 21,932 21,659
Gross profit 1,530 2,493 7,354 7,397
Research and development expense 1,057 848 3,052 2,310
Selling, general and administrative expense 1,695 2,279 5,951 5,493
Loss from operations (1,222) (634) (1,649) (406)
Interest expense 214 116 613 232
Loss before provision for income taxes (1,436) (750) (2,262) (638)
Provision for income taxes
Net loss $ (1,436) $ (750) $ (2,262) $ (638)
Net loss per basic share $ (0.03) $ (0.02) $ (0.05) $ (0.01)
Weighted average number of basic common shares outstanding 49,598,581 49,174,673 49,532,395 49,068,709
Net loss per diluted share $ (0.03) $ (0.02) $ (0.05) $ (0.01)
Weighted average number of diluted common shares outstanding 49,598,581 49,174,673 49,532,395 49,068,709
Product [Member]        
Revenue:        
Total revenue $ 7,746 $ 9,673 $ 28,925 $ 28,515
Product and Service, Other [Member]        
Revenue:        
Total revenue $ 212 $ 5 $ 361 $ 541