Fair Value Measurements - Fair Value of Assets and Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Assets:
Total available for sale investments	$ 44,629	$ 53,168
Recurring basis
Assets:
Total included in cash and cash equivalents	12,889	21,606
Total available for sale investments	44,629	53,168
Total assets measured at fair value on a recurring basis	57,518	74,774
Recurring basis \| Certificate of deposit
Assets:
Total available for sale investments	334	8,333
Recurring basis \| Corporate debt securities
Assets:
Total available for sale investments	25,091	19,373
Recurring basis \| Commercial paper
Assets:
Total available for sale investments	310	6,202
Recurring basis \| U.S. government agencies
Assets:
Total available for sale investments		834
Recurring basis \| U.S. treasury securities
Assets:
Total included in cash and cash equivalents	298
Total available for sale investments	18,894	18,426
Recurring basis \| Money market fund
Assets:
Total included in cash and cash equivalents	12,591	21,606
Recurring basis \| Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1)
Assets:
Total included in cash and cash equivalents	12,889	21,606
Total available for sale investments	18,894	18,426
Total assets measured at fair value on a recurring basis	31,783	40,032
Recurring basis \| Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1) \| Certificate of deposit
Assets:
Total available for sale investments	0	0
Recurring basis \| Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1) \| Corporate debt securities
Assets:
Total available for sale investments	0	0
Recurring basis \| Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1) \| Commercial paper
Assets:
Total available for sale investments	0	0
Recurring basis \| Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1) \| U.S. government agencies
Assets:
Total available for sale investments		0
Recurring basis \| Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1) \| U.S. treasury securities
Assets:
Total included in cash and cash equivalents	298
Total available for sale investments	18,894	18,426
Recurring basis \| Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1) \| Money market fund
Assets:
Total included in cash and cash equivalents	12,591	21,606
Recurring basis \| Significant Other Observable Inputs (Level 2)
Assets:
Total included in cash and cash equivalents	0	0
Total available for sale investments	25,735	34,742
Total assets measured at fair value on a recurring basis	25,735	34,742
Recurring basis \| Significant Other Observable Inputs (Level 2) \| Certificate of deposit
Assets:
Total available for sale investments	334	8,333
Recurring basis \| Significant Other Observable Inputs (Level 2) \| Corporate debt securities
Assets:
Total available for sale investments	25,091	19,373
Recurring basis \| Significant Other Observable Inputs (Level 2) \| Commercial paper
Assets:
Total available for sale investments	310	6,202
Recurring basis \| Significant Other Observable Inputs (Level 2) \| U.S. government agencies
Assets:
Total available for sale investments		834
Recurring basis \| Significant Other Observable Inputs (Level 2) \| U.S. treasury securities
Assets:
Total included in cash and cash equivalents	0
Total available for sale investments	0	0
Recurring basis \| Significant Other Observable Inputs (Level 2) \| Money market fund
Assets:
Total included in cash and cash equivalents	0	0
Recurring basis \| Significant Unobservable Inputs (Level 3)
Assets:
Total included in cash and cash equivalents	0	0
Total available for sale investments	0	0
Total assets measured at fair value on a recurring basis	0	0
Recurring basis \| Significant Unobservable Inputs (Level 3) \| Certificate of deposit
Assets:
Total available for sale investments	0	0
Recurring basis \| Significant Unobservable Inputs (Level 3) \| Corporate debt securities
Assets:
Total available for sale investments	0	0
Recurring basis \| Significant Unobservable Inputs (Level 3) \| Commercial paper
Assets:
Total available for sale investments	0	0
Recurring basis \| Significant Unobservable Inputs (Level 3) \| U.S. government agencies
Assets:
Total available for sale investments		0
Recurring basis \| Significant Unobservable Inputs (Level 3) \| U.S. treasury securities
Assets:
Total included in cash and cash equivalents	0
Total available for sale investments	0	0
Recurring basis \| Significant Unobservable Inputs (Level 3) \| Money market fund
Assets:
Total included in cash and cash equivalents	$ 0	$ 0