Accounts Receivable and Unbilled Accounts Receivable (Details) - USD ($)	Jun. 30, 2015	Dec. 31, 2014
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross accounts receivable	$ 12,464,777	$ 8,631,769
Less: allowances for doubtful accounts	(73,636)	(88,719)
Accounts receivable, net	12,391,141	8,543,050
Commercial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross accounts receivable	4,194,522	5,328,988
Government [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross accounts receivable	$ 8,270,255	$ 3,302,781