Fair Value Measurements (Tables)

9 Months Ended

Sep. 30, 2016

Fair Value Disclosures [Abstract]

Summary of Assets Measured at Fair Value on Recurring Basis

The following tables present the balances of assets measured at fair value on a recurring basis, by level within the fair value hierarchy, as of the date presented (in thousands), all such balances as of December 31, 2015 were $0:

	September 30, 2016
	Level 1		Level 2		Level 3
Cash equivalents:
Money market funds	$	35,883	$	—	$	—
Short-term investments:
U.S. government agency securities		—		5,006		—
Corporate notes and bonds		—		9,057		—
Total assets measured at fairvalue	$	35,883	$	14,063	$	—

Summary of Liabilities Measured at Fair Value on Recurring Basis

The following tables present the balances of liabilities measured at fair value on a recurring basis, by level within the fair value hierarchy, as of the date presented (in thousands), all such balances as of September 30, 2016 were $0:

	December 31, 2015
	Level 1		Level 2		Level 3
Convertible preferred stock warrants	$	—	$	—	$	2,865
Total liabilities measured at fair value	$	—	$	—	$	2,865

Roll-Forward of Fair Value of Preferred Stock Warrant Liabilities Categorized as Level 3

The following table provides a roll-forward of the fair value of the preferred stock warrant liabilities categorized as Level 3 for the nine months ended September 30, 2016 (in thousands):

Balance at December 31, 2015		2,865
Remeasurement of convertible preferred stock warrants		(559	)
Exercise of preferred stock warrants		(2,306	)
Balance at September 30, 2016	$	—