Income Taxes - Effective Income Tax Rate Reconciliation (Details)	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Reconciliation of BVI statutory income tax rate
BVI statutory income tax rate	0.00%	0.00%	0.00%
Foreign tax rate differential	0.80%	1.30%	(12.60%)
Tax credits	(3.30%)	(12.70%)	(5.80%)
Change in valuation allowance	2.70%	10.60%	18.50%
Other	(0.10%)	0.50%	0.00%
Effective income tax rate	0.10%	(0.30%)	0.10%