MARKETABLE SECURITIES AND FAIR VALUE MEASUREMENTS (Tables)

3 Months Ended

Mar. 31, 2016

Marketable Securities and Fair Value Measurements [Abstract]

Schedule of fair value of available-for-sale marketable securities

March 31, 2016	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
Security type
Corporate debt securities-short term	$	27,648	$	33	$	(1	)	$	27,680
Total available-for-sale marketable securities	$	27,648	$	33	$	(1	)	$	27,680

December 31, 2015	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
Security type
Corporate debt securities-short term	$	24,786	$	13	$	(10	)	$	24,789
Total available-for-sale marketable securities	$	24,786	$	13	$	(10	)	$	24,789

Schedule of assets measured at fair value on a recurring basis

	March 31, 2016		Quoted Prices in Active Markets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Cash equivalents	$	15,976	$	15,976	$	—	$	—
Corporate debt securities-short term		27,680		—		27,680		—
Total	$	43,656	$	15,976	$	27,680	$	—

	December 31, 2015		Quoted Prices in Active  Markets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Cash equivalents	$	11,800	$	11,800	$	—	$	—
Corporate debt securities-short term		24,789		—		24,789		—
Total	$	36,589	$	11,800	$	24,789	$	—