Fair Value Measurements (Tables)

6 Months Ended

Jun. 30, 2017

The following tables summarize the fair value of financial assets and liabilities that are measured at fair value and the classification by level of input within the fair value hierarchy:



	FAIR VALUE MEASUREMENTS AS OF JUNE 30, 2017
(in thousands)	Level 1		Level 2		Level 3		Total
Cash and cash equivalents:
Cash and money market accounts	$	242,650	$	—	$	—	$	242,650
Total cash and cash equivalents	$	242,650	$	—	$	—	$	242,650
Investments:
Commercial paper	$	—	$	33,480	$	—	$	33,480
Corporate bonds	—		31,789		—		31,789
Total investments	$	—	$	65,269	$	—	$	65,269
Total cash, cash equivalents and investments	$	242,650	$	65,269	$	—	$	307,919



	FAIR VALUE MEASUREMENTS AS OF DECEMBER 31, 2016
(in thousands)	Level 1		Level 2		Level 3		Total
Cash and cash equivalents:
Cash and money market accounts	$	196,445	$	—	$	—	$	196,445
Commercial paper	—		1,500		—		1,500
Total cash and cash equivalents	$	196,445	$	1,500	$	—	$	197,945
Investments:
Certificates of deposit	$	—	$	6,923	$	—	$	6,923
Corporate bonds	—		27,544		—		27,544
Government agencies	—		1,250		—		1,250
Total investments	$	—	$	35,717	$	—	$	35,717
Total cash, cash equivalents and investments	$	196,445	$	37,217	$	—	$	233,662