Concentration of Credit Risk (Details Textual) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accounts Receivable, Net, Current	$ 10,020,280		$ 10,020,280		$ 14,838,978
Customer A [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Concentration Risk, Percentage	30.20%	25.50%	29.40%	29.90%
Customer A [Member] | Accounts Receivable [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Concentration Risk, Percentage			21.20%	20.20%
Accounts Receivable, Net, Current	$ 2,104,000	$ 2,018,000	$ 2,104,000	$ 2,018,000
Customer B [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Concentration Risk, Percentage	12.20%	17.40%	14.80%	16.40%
Customer B [Member] | Accounts Receivable [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Concentration Risk, Percentage			16.20%	21.20%
Accounts Receivable, Net, Current	$ 1,606,000	$ 2,112,000	$ 1,606,000	$ 2,112,000
Two Customers [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Concentration Risk, Percentage	10.00%	10.00%