Long-Term Debt - Other Long-Term Debt (Details) - USD ($) $ in Thousands	Sep. 30, 2025	Mar. 31, 2025	Oct. 01, 2024	Sep. 24, 2024	Jun. 24, 2024
Long-Term Debt
Face amount	$ 2,952,271	$ 3,013,652
Equipment Loan Secured by Denver Plane
Long-Term Debt
Face amount at time of issuance					$ 6,400
Fixed interest rate				8.00%	8.50%
Face amount	5,300
Equipment Loan Secured by Tulsa Plane
Long-Term Debt
Face amount at time of issuance			$ 6,400
Fixed interest rate			8.00%
Face amount	$ 5,500