MARKETABLE SECURITIES (Details 1) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2014 investment	Jun. 30, 2013	Jun. 30, 2014 investment	Jun. 30, 2013	Dec. 31, 2013
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions, Less than One Year	22		22
Marketable securities	$ 81,611		$ 81,611		$ 6,004
Available-for-sale Securities, Gross Unrealized Loss			(59)		0
Proceeds from maturities and sales of current and non-current available-for-sale marketable securities and related gross realized gains and losses
Proceeds from maturities and sales of available-for-sale marketable securities	3,462	2	3,462	12,502
Available-for-sale Securities, Gross Realized Gains	2,299	0	2,299	0
Corporate Debt Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	51,621		51,621		0
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Loss			(59)		0
Marketable securities	78,581		78,581		1,008
Available-for-sale Securities, Gross Unrealized Loss			(59)		0
Total
Schedule of Available-for-sale Securities [Line Items]
Marketable securities	51,621		51,621		0
Available-for-sale Securities, Gross Unrealized Loss			$ (59)		$ 0