Fair Value Measurements (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024	Dec. 31, 2024
Fair value measurements
Transfer of assets between levels	$ 0	$ 0	$ 0	$ 0
Recurring fair value measurement
Fair value measurements
Total assets at fair value	67,244,000		67,244,000		$ 107,297,000
Recurring fair value measurement | Money market funds
Fair value measurements
Total assets at fair value	66,840,000		66,840,000		106,894,000
Recurring fair value measurement | Certificates of deposit
Fair value measurements
Total assets at fair value	404,000		404,000		403,000
Recurring fair value measurement | Level 1
Fair value measurements
Total assets at fair value	67,244,000		67,244,000		107,297,000
Recurring fair value measurement | Level 1 | Money market funds
Fair value measurements
Total assets at fair value	66,840,000		66,840,000		106,894,000
Recurring fair value measurement | Level 1 | Certificates of deposit
Fair value measurements
Total assets at fair value	404,000		404,000		403,000
Recurring fair value measurement | Level 2
Fair value measurements
Total assets at fair value	0		0		0
Recurring fair value measurement | Level 2 | Money market funds
Fair value measurements
Total assets at fair value	0		0		0
Recurring fair value measurement | Level 2 | Certificates of deposit
Fair value measurements
Total assets at fair value	0		0		0
Recurring fair value measurement | Level 3
Fair value measurements
Total assets at fair value	0		0		0
Recurring fair value measurement | Level 3 | Money market funds
Fair value measurements
Total assets at fair value	0		0		0
Recurring fair value measurement | Level 3 | Certificates of deposit
Fair value measurements
Total assets at fair value	$ 0		$ 0		$ 0