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Income Taxes (Details) - USD ($)
3 Months Ended 6 Months Ended
Jun. 30, 2019
Jun. 30, 2018
Jun. 30, 2019
Jun. 30, 2018
Reconciliation of the statutory U.S. federal tax rate to effective rate        
Provision for income tax (benefit) expense $ 364,987 $ 348,377 $ 125,841 $ 634,575
Effective tax rate (as a percent) 14.90% 20.50% 3.10% 22.40%