Summary of Significant Accounting Policies - Leases (Details) - USD ($)	3 Months Ended
	Mar. 31, 2019	Dec. 31, 2018
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating lease - right-of-use asset	$ 1,077,701
Operating leases liabilities, current portion	521,787
Operating leases liabilities, long term	116,328
Minimum
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Monthly base rents	38,391
Maximum
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Monthly base rents	40,730
ASU 2016-02
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating lease - right-of-use asset	1,111,214
Operating leases liabilities, current portion	336,647
Operating leases liabilities, long term	394,703
Deferred rent		$ 379,864
Adoption Impact | ASU 2016-02
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating lease - right-of-use asset	1,111,214
Operating leases liabilities, current portion	336,647
Operating leases liabilities, long term	394,703
Deferred rent	$ (379,864)