Line of Credit (Details Textual) - USD ($)	1 Months Ended	12 Months Ended
	Jun. 15, 2017	Dec. 31, 2017	Dec. 31, 2016	Dec. 17, 2017	Dec. 31, 2011
Debt Instrument [Line Items]
Proceeds from Lines of Credit		$ 20,339,250	$ 18,254,362
National Bank Commercial Loan Agreement Facility [Member]
Debt Instrument [Line Items]
Proceeds from Lines of Credit		20,300,000
Repayments of Lines of Credit		20,300,000
Cardinal Bank Commercial Loan Agreement Facility [Member]
Debt Instrument [Line Items]
Line Of Credit Facility, Maximum Borrowing Capacity		4,500,000
Debt instrument, face amount		2,000,000		$ 528,000	$ 4,000,000
Proceeds from Lines of Credit		$ 3,300,000
Line of Credit [Member] | Access National Bank [Member]
Debt Instrument [Line Items]
Line Of Credit Facility, Maximum Borrowing Capacity	$ 5,000,000
Line of Credit Facility, Borrowing Capacity, Description	The available amount under the working capital line of credit is subject to a borrowing base, which is equal to the lesser of (i) $5.0 million or (ii) 70% of the net unpaid balance of the Company’s eligible accounts receivable.
Debt Instrument, Description of Variable Rate Basis	prime rate plus 1.25%