Summary of Significant Accounting Policies - Additional Information (Details) - USD ($)	3 Months Ended
	Mar. 31, 2018	Jan. 01, 2018	Dec. 31, 2017
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Accounts receivable, net of allowances	$ 3,118,556		$ 4,168,015
Contract assets	3,400,000		0
Contract assets, net	1,786,369		0
Write-offs in accounts receivable	400,000
Write-offs in contract assets account	0
Deferred revenue	$ 13,139,819		$ 18,360,690
Revenue expected to be recognized during next 12 months	56.00%
Accounting Standards Update 2014-09 | Difference between Revenue Guidance in Effect before and after Topic 606
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Contract assets		$ 3,100,000
Contract assets, net	$ 1,786,369
Deferred revenue		$ (5,400,000)