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Income Taxes (Details - Tax reconciliation) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Income Tax Disclosure [Abstract]      
Provision for income taxes at U.S. Federal statutory rate $ (9,110) $ (1,219) $ (3,161)
State taxes, net of federal benefit (10) (411) (944)
Foreign taxes at different rate 869 458 314
Non-deductible expenses 12 211 (936)
Tax law changes 0 0 0
Valuation allowance 9,645 2,150 6,463
Other (82) (743) (209)
Disposition of subsidiaries 0 0 0
Share Based Compensation 130 12 12
Gain on debt modification 0 0 0
Reversal of tax penalty 0 0 (1,447)
Total provision for income taxes $ 1,454 $ 458 $ 92