Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation.

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Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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Property and Equipment (Details) - USD ($)	3 Months Ended		9 Months Ended
Property and Equipment (Details) - USD ($)	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 11,048,558		$ 11,048,558		$ 9,836,031
Less: accumulated depreciation and amortization	(8,787,591)		(8,787,591)		(7,529,752)
Total	2,260,967		2,260,967		2,306,279
Depreciation expense	457,272	$ 406,014	1,343,247	$ 1,077,143
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	293,152		293,152		288,536
Equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	1,525,057		1,525,057		1,509,464
Capitalized internal use and purchased software
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	8,809,333		8,809,333		7,582,181
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 421,016		$ 421,016		$ 455,850