Property and Equipment (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 9,333,261		$ 9,333,261		$ 7,627,832
Less: accumulated depreciation and amortization	(7,100,078)		(7,100,078)		(6,012,609)
Total	2,233,183		2,233,183		1,615,223
Depreciation expense	406,014	$ 325,236	1,077,143	$ 958,704
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	288,536		288,536		241,876
Equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	1,468,776		1,468,776		811,948
Capitalized internal use and purchased software
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	7,131,442		7,131,442		6,132,626
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 444,507		$ 444,507		$ 441,382