Revenue from Contracts with Customers (Details 1) - USD ($)	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Revenue, Net	$ 20,079,619	$ 18,612,239
U.S. Federal Government [Member]
Revenue, Net	14,274,046	13,743,348
U.S. State and Local Governments [Member]
Revenue, Net	124,107	49,427
Foreign Governments [Member]
Revenue, Net	27,071	45,542
Commercial Enterprises [Member]
Revenue, Net	$ 5,654,395	$ 4,773,923