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Income Taxes (Details) - USD ($)
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Summary of provision for income taxes    
Federal - current $ 636,046 $ 1,101,503
Federal - deferred 120,760 (60,364)
State - current 28,530 31,930
State - deferred 5,694 892
Total provision for income taxes $ 791,030 $ 1,073,961