Fair Value Measurements (Tables)

12 Months Ended

Dec. 31, 2021

Fair Value Disclosures [Abstract]

Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis

We measure cash, cash equivalents and short-term investments at fair value on a recurring basis. The fair values of these such assets were as follows (in thousands):

	Fair Value Measurements at Reporting Date Using
	Balance at December 31, 2021		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Cash and money market funds	$	86,043	$	86,043	$	—	$	—
U.S. corporate debt securities		15,006		—		15,006		—
Foreign corporate debt securities		10,548		—		10,548		—
U.S. commercial paper		10,496		—		10,496		—
Foreign commercial paper		35,487		—		35,487		—
Total	$	157,580	$	86,043	$	71,537	$	—

	Fair Value Measurements at Reporting Date Using
	Balance at December 31, 2020		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Cash and money market funds	$	49,149	$	49,149	$	—	$	—
U.S. treasury bills and government agency obligations		20,276		20,276		—		—
U.S. corporate debt securities		11,547		—		11,547		—
Foreign corporate debt securities		15,557		—		15,557		—
U.S. commercial paper		27,996		—		27,996		—
Foreign commercial paper		83,966		—		83,966		—
Total	$	208,491	$	69,425	$	139,066	$	—