FAIR VALUE OF FINANCIAL INSTRUMENTS (Tables)

9 Months Ended

Sep. 30, 2017

Schedule of Financial Instruments Measured at Fair Value

The following table represents the Company’s financial instruments measured at fair value as of September 30, 2017 and December 31, 2016 (in thousands):



	September 30, 2017								December 31, 2016
	Level 1		Level 2		Level 3		Total		Level 1		Level 2		Level 3		Total
Cash Equivalents:
Money market funds	$	158,171	$	—	$	—	$	158,171	$	152,423	$	—	$	—	$	152,423
Commercial paper	—		7,996		—		7,996		—		—		—		—
Short-term Marketable Securities:
Agency bonds	—		127,953		—		127,953		—		152,394		—		152,394
Commercial paper	—		41,818		—		41,818		—		45,894		—		45,894
Agency discount notes	—		15,949		—		15,949		—		—		—		—
Corporate bonds	—		9,993		—		9,993		—		9,006		—		9,006
Total cash equivalents and short-term marketable securities	$	158,171	$	203,709	$	—	$	361,880	$	152,423	$	207,294	$	—	$	359,717