CASH, CASH EQUIVALENTS AND SHORT-TERM INVESTMENTS (Tables)

6 Months Ended

Jun. 30, 2015

Cash and Cash Equivalents [Abstract]

Summary of Company Cash, Cash Equivalents and Short-Term Investments

The following tables summarize the Company’s cash, cash equivalents and short-term investments for each of the periods indicated:

	As of June 30, 2015
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Market Value
	(in thousands)
Cash and money market funds	$	67,163	$	—	$	—		$	67,163
Commercial paper		13,372		—		(3	)		13,369
Government and government agency bonds		47,954		—		(2	)		47,952
Corporate bonds		28,417		—		(14	)		28,403
Total assets	$	156,906	$	—	$	(19	)	$	156,887
As reported:
Cash and cash equivalents	$	69,538	$	—	$	—		$	69,538
Short-term investments		87,368		—		(19	)		87,349
Total assets	$	156,906	$	—	$	(19	)	$	156,887

	As of December 31, 2014
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Market Value
	(in thousands)
Cash and money market funds	$	73,551	$	—	$	—			73,551
Commercial paper		2,997		—		—			2,997
Government and government agency bonds		75,289		—		(39	)		75,250
Corporate bonds		58,602		—		(56	)		58,546
Total assets	$	210,439	$	—	$	(95	)		210,344
As reported:
Cash and cash equivalents	$	73,551	$	—	$	—			73,551
Short-term investments		136,888		—		(95	)		136,793
Total assets	$	210,439	$	—	$	(95	)		210,344