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Supplemental Cash Flow Information (Details) - USD ($)
shares in Thousands, $ in Thousands
3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Supplemental cash flow information:    
Interest paid $ 5 $ 6
Income taxes received 0 (351)
Non cash financing and investing activities:    
Issuance of convertible notes payable as consideration for customer contract $ 10,000 $ 0
Conversion of convertible notes payable to common stock (shares) 2,949 0