CASH AND CASH EQUIVALENTS (Details) - USD ($)	Jun. 30, 2016	Dec. 31, 2015	Jun. 30, 2015	Dec. 31, 2014
Cash and Cash Equivalents [Abstract]
Money market funds	$ 8,514,029	$ 8,265,583
Checking and bank deposits	20,063,803	46,795,746
Total	$ 28,577,832	$ 55,061,329	$ 60,300,086	$ 55,713,784