AVAILABLE-FOR-SALE SECURITIES (Details 4) - USD ($)	Dec. 31, 2014	Dec. 31, 2013
Schedule of Available-for-sale Securities [Line Items]
Less than one year	$ 0	$ 0
Greater than one year and less than five years	35,855,146	0
Greater than or equal to five years	332,460,592	444,984,955
Total	$ 368,315,738	$ 444,984,955