Income Taxes - Income Tax Paid (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024
Income Tax Paid, by Individual Jurisdiction [Line Items]
Federal	$ 0
Total	2,008	$ 563
Massachusetts
Income Tax Paid, by Individual Jurisdiction [Line Items]
State	124
Other states
Income Tax Paid, by Individual Jurisdiction [Line Items]
State	366
United Kingdom
Income Tax Paid, by Individual Jurisdiction [Line Items]
Total Foreign	650
Israel
Income Tax Paid, by Individual Jurisdiction [Line Items]
Total Foreign	843
Other foreign
Income Tax Paid, by Individual Jurisdiction [Line Items]
Total Foreign	$ 25