Income Tax Provision - Summary of Income Tax Expense (Details) - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Income Tax Disclosure [Abstract]
Current income tax expense	$ 6,419,146	$ 4,593,000
Deferred income tax expense (benefit)	(400,000)	366,000
Total income tax expense	$ 6,019,146	$ 4,959,000