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Income Taxes - Deferred income taxes (Details) - USD ($)
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Deferred tax asset (liability):    
Unrealized gains on marketable securities $ (101,521) $ (155,578)
Start-up costs 241,613 52,801
Less: Valuation Allowance (241,613)  
Deferred tax liability $ (101,521) $ (102,777)