Income Taxes - Effective Tax Rate Reconciliation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024
Amount
U.S. federal statutory tax rate	$ 735	$ 5,541
State and local income taxes, net of federal income tax effect	591	1,513
Other countries		67
Changes in valuation allowances	(3,275)	(3,029)
Effect of changes in tax laws or rates enacted in the current period	0
Global intangible low-taxed income	52
Foreign disregarded entity branch inclusion	195
Research and development tax credits	(1,180)
Stock compensation	3,694	(1,336)
Meals and entertainment	43
Other	16
Changes in unrecognized tax benefits	0
Other adjustments	55
Total provision (benefit) for income taxes	$ 810	$ 0
Percent
U.S. federal statutory tax rate	20.90%
State and local income taxes, net of federal income tax effect	16.80%
Changes in valuation allowances	93.30%
Effect of changes in tax laws or rates enacted in the current period	0.00%
Global intangible low-taxed income	1.50%
Foreign disregarded entity branch inclusion	5.60%
Research and development tax credits	33.60%
Stock compensation	105.20%
Meals and entertainment	1.20%
Other	0.50%
Changes in unrecognized tax benefits	0.00%
Other adjustments	1.60%
Provision for income taxes and effective tax rate	23.10%
Ireland
Amount
Other countries	$ (79)
Changes in valuation allowances	157
Provision to return	(236)
Nondeductible expenses	$ (37)
Percent
Statutory tax rate difference between Ireland and the United States	(2.30%)
Changes in valuation allowances	(4.50%)
Provision to return	(6.70%)
Nondeductible expenses	(1.10%)
United Kingdom
Amount
Other countries	$ (5)
Changes in valuation allowances	0
Provision to return	0
Nondeductible expenses	$ 50
Percent
Statutory tax rate difference between Ireland and the United States	(0.10%)
Changes in valuation allowances	0.00%
Provision to return	0.00%
Nondeductible expenses	1.40%
Germany
Amount
Other countries	$ (4)
Changes in valuation allowances	0
Provision to return	0
Nondeductible expenses	$ 45
Percent
Statutory tax rate difference between Ireland and the United States	(0.10%)
Changes in valuation allowances	0.00%
Provision to return	0.00%
Nondeductible expenses	1.30%
Other countries
Amount
Other countries	$ (7)
Percent
Statutory tax rate difference between Ireland and the United States	(0.20%)