Fair Value Measurements (Tables)

12 Months Ended

Dec. 31, 2015

Fair Value Disclosures [Abstract]

Fair Value Measurements

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
	DECEMEBER 31, 2015
(in thousands)	LEVEL 1		LEVEL 2		LEVEL 3		TOTAL
Cash and cash equivalents:
Cash and money market accounts	$	91,060	$	—	$	—	$	91,060
Total cash and cash equivalents:	$	91,060	$	—	$	—	$	91,060
Investments:
Certificates of deposit	$	—	$	18,355	$	—	$	18,355
Commercial paper	—		5,966		—		5,966
Corporate bonds	—		32,995		—		32,995
Government agencies	—		1,994		—		1,994
Total investments	$	—	$	59,310	$	—	$	59,310
Total cash, cash equivalents, and investments:	$	91,060	$	59,310	$	—	$	150,370

	FAIR VALUE MEASUREMENTS AS OF
	DECEMEBER 31, 2014
(in thousands)	LEVEL 1		LEVEL 2		LEVEL 3		TOTAL
Cash and cash equivalents:
Cash and money market accounts	$	84,613	$	—	$	—	$	84,613
Certificates of deposit	—		472		—		472
Corporate bonds	—		501		—		501
Total cash and cash equivalents:	$	84,613	$	973	$	—	$	85,586
Investments:
Certificates of deposit	$	—	$	30,241	$	—	$	30,241
Commercial paper	—		5,986		—		5,986
Corporate bonds	—		30,311		—		30,311
Government agencies	—		6,076		—		6,076
Total investments	$	—	$	72,614	$	—	$	72,614
Total cash, cash equivalents, and investments:	$	84,613	$	73,587	$	—	$	158,200