FAIR VALUE MEASUREMENTS CHANGES IN FAIR VALUE MEASUREMENT OF LEVEL 3 ITEMS (Details) (Fair Value, Measurements, Recurring [Member], USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Dec. 31, 2014
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance as of December 31, 2014		$ 3,384
Balance as of March 31, 2015	3,667	3,384
Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance as of December 31, 2014	3,384
Sales	0
Realized gains	59
Unrealized gains	224
Balance as of March 31, 2015	$ 3,667