Fair Value Measurements (Tables)

12 Months Ended

Dec. 31, 2016

Fair Value Disclosures [Abstract]

Summary of Company's Assets and Liabilities Measured at Fair Value on a Recurring Basis

The following tables present information about the Company’s assets and liabilities that are measured at fair value on a recurring basis as of December 31, 2016 and 2015, and indicate the fair value hierarchy of the valuation techniques utilized to determine such fair value (in thousands):

	Fair Value Measurement at December 31, 2016
	Quoted Prices in Active Markets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Total
Assets:
Cash equivalents	$	56,147	$	—	$	—	$	56,147
Marketable securities:
U.S. government agency securities and treasuries		71,999		7,403		—		79,402
Total	$	128,146	$	7,403	$	—	$	135,549

	Fair Value Measurement at December 31, 2015
	Quoted Prices in Active Markets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Total
Assets:
Cash equivalents	$	94,741	$	8,400	$	—	$	103,141
Marketable securities:
U.S. government agency securities and treasuries		54,954		59,592		—		114,546
Total	$	149,695	$	67,992	$	—	$	217,687