Investments (Schedule of Unrealized Loss on Investments) (Details) - USD ($)	6 Months Ended	12 Months Ended
	Jun. 30, 2015	Dec. 31, 2014
Investments [Abstract]
Aggregate Unrealized Losses, Less than one year	$ 1,308,492	$ 1,135,425
Aggregate Fair Value, Less than one year	25,133,644	19,972,258
Equity investment losses were considered to be other than temporary	$ 0	$ 0