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Consolidated Revenue Mix and Revenue by Geographic Region (Details 1) (USD $)
3 Months Ended 12 Months Ended
Dec. 31, 2014
Sep. 30, 2014
Jun. 30, 2014
Mar. 31, 2014
Dec. 31, 2013
Sep. 30, 2013
Jun. 30, 2013
Mar. 31, 2013
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Segment Reporting Information [Line Items]                      
Revenue, Net $ 16,763,502us-gaap_SalesRevenueNet $ 14,555,908us-gaap_SalesRevenueNet $ 12,394,021us-gaap_SalesRevenueNet $ 9,602,779us-gaap_SalesRevenueNet $ 11,290,459us-gaap_SalesRevenueNet $ 12,222,505us-gaap_SalesRevenueNet $ 11,343,962us-gaap_SalesRevenueNet $ 11,968,106us-gaap_SalesRevenueNet $ 53,316,210us-gaap_SalesRevenueNet $ 46,825,032us-gaap_SalesRevenueNet $ 55,782,742us-gaap_SalesRevenueNet
North America [Member]                      
Segment Reporting Information [Line Items]                      
Revenue, Net                 49,209,336us-gaap_SalesRevenueNet
/ us-gaap_StatementGeographicalAxis
= us-gaap_NorthAmericaMember
46,825,032us-gaap_SalesRevenueNet
/ us-gaap_StatementGeographicalAxis
= us-gaap_NorthAmericaMember
55,782,742us-gaap_SalesRevenueNet
/ us-gaap_StatementGeographicalAxis
= us-gaap_NorthAmericaMember
Europe [Member]                      
Segment Reporting Information [Line Items]                      
Revenue, Net                 3,936,527us-gaap_SalesRevenueNet
/ us-gaap_StatementGeographicalAxis
= us-gaap_EuropeMember
0us-gaap_SalesRevenueNet
/ us-gaap_StatementGeographicalAxis
= us-gaap_EuropeMember
0us-gaap_SalesRevenueNet
/ us-gaap_StatementGeographicalAxis
= us-gaap_EuropeMember
Middle East [Member]                      
Segment Reporting Information [Line Items]                      
Revenue, Net                 $ 170,347us-gaap_SalesRevenueNet
/ us-gaap_StatementGeographicalAxis
= us-gaap_MiddleEastMember
$ 0us-gaap_SalesRevenueNet
/ us-gaap_StatementGeographicalAxis
= us-gaap_MiddleEastMember
$ 0us-gaap_SalesRevenueNet
/ us-gaap_StatementGeographicalAxis
= us-gaap_MiddleEastMember