Investments and Fair Value Measurements - Available-for-sale securities (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Available for sale securities:
Amortized Cost	$ 82,589	$ 89,125
Gross Unrealized Gains	50	4
Gross Unrealized Losses		(69)
Estimated Fair Value	82,639	89,060
Debt Securities, Available-for-sale, Unrealized Gain (Loss) [Abstract]
Estimated Fair Value lesser than 12 months		57,880
Estimated Fair Value Total		57,880
Gross unrealized lesser than 12 months		(69)
Gross unrealized loss, Total		(69)
Marketable securities
Available for sale securities:
Amortized Cost	70,923	62,946
Gross Unrealized Gains	50	4
Gross Unrealized Losses		(69)
Estimated Fair Value	70,973	62,881
US government securities
Debt Securities, Available-for-sale, Unrealized Gain (Loss) [Abstract]
Estimated Fair Value lesser than 12 months		29,819
Estimated Fair Value Total		29,819
Gross unrealized lesser than 12 months		(29)
Gross unrealized loss, Total		(29)
US government securities | Quoted Prices in Active Markets for Identical Assets, Level 1
Available for sale securities:
Amortized Cost	33,622	29,848
Gross Unrealized Gains	27
Gross Unrealized Losses		(29)
Estimated Fair Value	33,649	29,819
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)
Corporate notes | Significant Other Observable Inputs, Level 2
Available for sale securities:
Amortized Cost	3,079	28,670
Gross Unrealized Gains	1	4
Gross Unrealized Losses		(32)
Estimated Fair Value	3,080	28,642
Commercial paper | Significant Other Observable Inputs, Level 2
Available for sale securities:
Amortized Cost	34,222
Gross Unrealized Gains	22
Estimated Fair Value	34,244
US 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)
US 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	11,666	26,179
Estimated Fair Value	$ 11,666	$ 26,179