Property and Equipment (Details Textual) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Property and Equipment (Textual)
Depreciation expense	$ 1,677,033	$ 2,070,007	$ 3,351,761	$ 4,144,514
Depreciation included in cost of revenues and operating expenses	$ 1,302,898	$ 1,902,611	$ 2,816,888	$ 3,632,422