Income Taxes - Provision for (benefit from) income taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Current:
U.S. federal	$ (150)	$ 0	$ 0
U.S. state	(56)	0	0
Foreign	1,966	440	0
Total current:	1,760	440	0
Deferred:
U.S. federal	(43)	204	(1,262)
U.S. state	(21)	28	0
Total deferred:	(64)	232	(1,262)
Total provision for (benefit from) income taxes	$ 1,696	$ 672	$ (1,262)