Fair Value Measurements - Schedule of Financial Assets Measured and Recognized at Fair Value (Details) - Recurring - USD ($) $ in Thousands		Dec. 31, 2021	Dec. 31, 2020
Assets
Marketable Securities		$ 79,935	$ 31,910
Total fair value of assets		95,744	68,214
Marketable Securities Amortized Cost		79,977	31,881
Marketable Securities Gross Unrealized Gains			30
Marketable Securities Gross Unrealized Losses		(42)	(1)
Marketable Securities Estimate Fair Value		79,935	31,910
Amortized Cost		95,786	68,185
Gross Unrealized Gains			30
Gross Unrealized Losses		(42)	(1)
Estimate Fair Value		95,744	68,214
U.S. Government Bonds
Assets
Marketable Securities		4,667
Marketable Securities Amortized Cost		4,670
Marketable Securities Gross Unrealized Losses		(3)
Marketable Securities Estimate Fair Value		4,667
Foreign Government Agency Bonds
Assets
Marketable Securities	[1]	6,526
Marketable Securities Amortized Cost		6,530
Marketable Securities Gross Unrealized Losses		(4)
Marketable Securities Estimate Fair Value		6,526
Corporate Bonds
Assets
Marketable Securities		49,989	31,910
Marketable Securities Amortized Cost		50,008	31,881
Marketable Securities Gross Unrealized Gains			30
Marketable Securities Gross Unrealized Losses		(19)	(1)
Marketable Securities Estimate Fair Value		49,989	31,910
Asset-backed Securities
Assets
Marketable Securities		18,753
Marketable Securities Amortized Cost		18,769
Marketable Securities Gross Unrealized Losses		(16)
Marketable Securities Estimate Fair Value		18,753
Money Market Funds
Assets
Money market funds	[2]	15,809	36,304
Amortized Cost	[2]	15,809	36,304
Estimate Fair Value	[2]	15,809	36,304
Quoted Prices in Active Markets for Identical Assets (Level 1)
Assets
Marketable Securities		4,667
Total fair value of assets		20,476	36,304
Quoted Prices in Active Markets for Identical Assets (Level 1) | U.S. Government Bonds
Assets
Marketable Securities		4,667
Quoted Prices in Active Markets for Identical Assets (Level 1) | Money Market Funds
Assets
Money market funds	[2]	15,809	36,304
Quoted Prices in Active Markets for Identical Assets (Level 2)
Assets
Marketable Securities		75,268	31,910
Total fair value of assets		75,268	31,910
Quoted Prices in Active Markets for Identical Assets (Level 2) | Foreign Government Agency Bonds
Assets
Marketable Securities	[1]	6,526
Quoted Prices in Active Markets for Identical Assets (Level 2) | Corporate Bonds
Assets
Marketable Securities		49,989	$ 31,910
Quoted Prices in Active Markets for Identical Assets (Level 2) | Asset-backed Securities
Assets
Marketable Securities		$ 18,753

[1] Consists of short-term agency bonds of Asian Development Bank and International Bank for Reconstruction and Development.

[2] Included in cash and cash equivalents on the balance sheet.