Summary of Significant Accounting Policies - Fuel and Merchandise Vendor Allowances And Rebates (Details) - BW Ultimate Parent, LLC and Subsidiaries - USD ($) $ in Thousands |
3 Months Ended | |
|---|---|---|
Mar. 31, 2026 |
Mar. 31, 2025 |
|
| Accounting Policies [Line Items] | ||
| Fuel Supplier Incentives and Allowances | $ 428 | $ 374 |
| Merchandise Vendor Allowances and Rebates | $ 9,718 | $ 9,069 |