FAIR VALUE MEASUREMENTS CHANGES IN FAIR VALUE MEASUREMENT OF LEVEL 3 ITEMS (Details) (Fair Value, Measurements, Recurring [Member], USD $) In Thousands, unless otherwise specified			6 Months Ended
	Jun. 30, 2014	Dec. 31, 2013	Jun. 30, 2014 Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Balance as of December 31, 2013	$ 4,139	$ 4,383	$ 4,383
Sales			(2,162)
Realized gain (loss)			1,240
Unrealized gain (loss)			678
Balance as of June 30, 2014	$ 4,139	$ 4,383	$ 4,139