CASH, MONEY MARKET FUNDS, AND SHORT-TERM INVESTMENTS (Details 1) $ in Thousands	12 Months Ended
	Dec. 31, 2015 USD ($)
Amortized Cost	$ 90,010
Gross Unrealized Gains	48
Gross Unrealized Losses	0
Fair Value	90,058
Corporate Debt Securities [Member]
Amortized Cost	70,065
Gross Unrealized Gains	48
Gross Unrealized Losses	0
Fair Value	70,113
Money Market Funds [Member]
Amortized Cost	19,945
Gross Unrealized Gains	0
Gross Unrealized Losses	0
Fair Value	$ 19,945