Summary of Significant Accounting Policies Summary of Significant Accounting Policies - Detail 4 (Details)	12 Months Ended
	Dec. 31, 2018 USD ($)
Deferred Revenue Rollforward [Abstract]
Deferred Revenue	$ 18,360,690
Deferred Revenue, Cumulative Effect Of Change In Accounting Principle	(5,359,579)
Deferred Revenue, Additions	14,249,597
Deferred Revenue, Revenue Recognized	(17,837,906)
Deferred Revenue, Increase (Decrease) In Reserves	(46,312)
Deferred Revenue	$ 9,366,490