Investments and Fair Value Measurements - Available-for-sale securities (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Available for sale securities:
Amortized Cost	$ 86,534	$ 89,125
Gross Unrealized Gains		4
Gross Unrealized Losses	(22)	(69)
Estimated Fair Value	86,512	89,060
Debt Securities, Available-for-sale, Unrealized Gain (Loss) [Abstract]
Estimated Fair Value lesser than 12 months	58,695	57,880
Fair value of assets transferred from Level 1 to Level 2	0
Fair value of assets transferred from Level 2 to Level 1	0
Estimated Fair Value Total	58,695	57,880
Gross unrealized lesser than 12 months	(22)	(69)
Gross unrealized loss, Total	(22)	(69)
Marketable securities
Available for sale securities:
Amortized Cost	61,692	62,946
Gross Unrealized Gains		4
Gross Unrealized Losses	(22)	(69)
Estimated Fair Value	61,670	62,881
U.S. government securities
Debt Securities, Available-for-sale, Unrealized Gain (Loss) [Abstract]
Estimated Fair Value lesser than 12 months	19,283	29,819
Estimated Fair Value Total	19,283	29,819
Gross unrealized lesser than 12 months	(2)	(29)
Gross unrealized loss, Total	(2)	(29)
U.S. government securities | Quoted Prices in Active Markets for Identical Assets, Level 1
Available for sale securities:
Amortized Cost	22,260	29,848
Gross Unrealized Losses	(2)	(29)
Estimated Fair Value	22,258	29,819
U.S. corporate notes
Debt Securities, Available-for-sale, Unrealized Gain (Loss) [Abstract]
Estimated Fair Value lesser than 12 months		23,641
Estimated Fair Value Total		23,641
Gross unrealized lesser than 12 months		(32)
Gross unrealized loss, Total		(32)
U.S. corporate notes | Significant Other Observable Inputs, Level 2
Available for sale securities:
Amortized Cost		28,670
Gross Unrealized Gains		4
Gross Unrealized Losses		(32)
Estimated Fair Value		28,642
U.S. commercial paper
Debt Securities, Available-for-sale, Unrealized Gain (Loss) [Abstract]
Estimated Fair Value lesser than 12 months	39,412
Estimated Fair Value Total	39,412
Gross unrealized lesser than 12 months	(20)
Gross unrealized loss, Total	(20)
U.S. commercial paper | Significant Other Observable Inputs, Level 2
Available for sale securities:
Amortized Cost	39,432
Gross Unrealized Losses	(20)
Estimated Fair Value	39,412
U.S. government agency securities
Debt Securities, Available-for-sale, Unrealized Gain (Loss) [Abstract]
Estimated Fair Value lesser than 12 months		4,420
Estimated Fair Value Total		4,420
Gross unrealized lesser than 12 months		(8)
Gross unrealized loss, Total		(8)
U.S. government agency securities | Significant Other Observable Inputs, Level 2
Available for sale securities:
Amortized Cost		4,428
Gross Unrealized Losses		(8)
Estimated Fair Value		4,420
Money market funds | Quoted Prices in Active Markets for Identical Assets, Level 1
Available for sale securities:
Amortized Cost	24,842	26,179
Estimated Fair Value	$ 24,842	$ 26,179