Income Taxes - Deferred Income Tax Assets (Liabilities) (Details) - USD ($) $ in Thousands	Dec. 31, 2025	Dec. 31, 2024
Deferred tax assets
Net operating losses	$ 52,044	$ 25,269
Tax credit carryforwards	8,283	4,570
Intangibles	1,367	1,528
Startup costs, depreciation and other	20	10
Capitalized R&D (Section 174)	31,983	26,292
Stock compensation	4,077	1,335
Lease liability	529	195
Total gross deferred tax asset	98,303	59,199
Deferred tax liabilities - ROU asset	(522)	(182)
Valuation allowance	(97,781)	(59,017)
Net deferred tax asset	$ 0	$ 0