AVAILABLE-FOR-SALE SECURITIES (Details 5) - USD ($)	Sep. 30, 2015	Dec. 31, 2014
Schedule of Available-for-sale Securities [Line Items]
Less than one year	$ 0	$ 0
Greater than one year and less than five years	64,655,165	35,855,146
Greater than or equal to five years	397,903,721	332,460,592
Total	$ 462,558,886	$ 368,315,738