Note 8. Government Grants (Details) - USD ($) $ in Thousands	1 Months Ended			2 Months Ended	3 Months Ended	12 Months Ended
	Oct. 31, 2025	Dec. 31, 2024	Dec. 31, 2023	Jul. 31, 2025	Mar. 31, 2026	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
December 2023 Agreement
Government Assistance [Line Items]
Government assistance, gross amount prior to sale of Section 45X credits			$ 687,200
Aggregate transaction price for sale of Section 45X tax credits			$ 659,700
Cash proceeds received from sale of Section 45X tax credits							$ 659,700
December 2024 Agreement
Government Assistance [Line Items]
Government assistance, gross amount prior to sale of Section 45X credits		$ 857,200
Aggregate transaction price for sale of Section 45X tax credits		818,600
Cash proceeds received from sale of Section 45X tax credits		616,000				$ 202,600
June and July Agreements
Government Assistance [Line Items]
Government assistance, gross amount prior to sale of Section 45X credits				$ 701,900
Aggregate transaction price for sale of Section 45X tax credits				$ 668,100
Cash proceeds received from sale of Section 45X tax credits						668,100
October 2025 Agreement
Government Assistance [Line Items]
Government assistance, gross amount prior to sale of Section 45X credits	$ 699,700
Aggregate transaction price for sale of Section 45X tax credits	$ 668,200
Cash proceeds received from sale of Section 45X tax credits					$ 95,200	573,000
Cost of Sales
Government Assistance [Line Items]
Government Grants, Amount, Consolidated Statements of Operations						$ 1,606,722	$ 1,009,451	$ 659,745
Government Grants, Consolidated Statements of Operations [Extensible Enumeration]						Cost of sales	Cost of sales	Cost of sales
Selling, General and Administrative Expenses
Government Assistance [Line Items]
Government Grants, Amount, Consolidated Statements of Operations						$ 61	$ 0	$ 0
Government Grants, Consolidated Statements of Operations [Extensible Enumeration]						Selling, general and administrative	Selling, general and administrative	Selling, general and administrative
Research and development
Government Assistance [Line Items]
Government Grants, Amount, Consolidated Statements of Operations						$ 2,391	$ 4,186	$ 0
Government Grants, Consolidated Statements of Operations [Extensible Enumeration]						Research and development	Research and development	Research and development
Production start-up
Government Assistance [Line Items]
Government Grants, Amount, Consolidated Statements of Operations						$ 0	$ 484	$ 0
Government Grants, Consolidated Statements of Operations [Extensible Enumeration]						Production start-up	Production start-up	Production start-up
Property, plant and equipment [Member]
Government Assistance [Line Items]
Government Grants, Amount, Noncurrent, Consolidated Balance Sheet		$ 150,375				$ 150,216	$ 150,375
Government Grants, Noncurrent, Consolidated Balance Sheet [Extensible Enumeration]		Property, plant and equipment, net				Property, plant and equipment, net	Property, plant and equipment, net
Other assets [Member]
Government Assistance [Line Items]
Government Grants, Amount, Noncurrent, Consolidated Balance Sheet		$ 5,625				$ 5,180	$ 5,625
Government Grants, Noncurrent, Consolidated Balance Sheet [Extensible Enumeration]		Other assets				Other assets	Other assets