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Income Taxes (Details) - USD ($)
3 Months Ended 9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Dec. 31, 2020
Income Tax Disclosure [Abstract]          
Income tax expense $ 106,000 $ 96,000 $ 257,000 $ 255,000  
Deferred tax assets, net $ 0   $ 0   $ 0