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Unit Based Awards - Long-Term Incentive Plans - Narrative (Details) $ in Thousands |  |  |  |  |  |  |  |  |  | 3 Months Ended | 9 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Jan. 24, 2029 shares | Jan. 24, 2028 shares | Jan. 24, 2027 shares | Jan. 24, 2026 shares | Jul. 16, 2025 shares | Feb. 11, 2025 director shares | Jul. 19, 2023 shares | Apr. 20, 2022 USD ($) shares | Jul. 21, 2021 | Sep. 30, 2025 USD ($) | Sep. 30, 2024 USD ($) | Sep. 30, 2025 USD ($) shares | Sep. 30, 2024 USD ($) | Dec. 31, 2024 USD ($) | Apr. 19, 2022 shares | May 26, 2017 shares
Share-based Compensation Arrangement by Share-based Payment Award |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total unit-based compensation expense | $ |  |  |  |  |  |  |  |  |  | $ 820 | $ 1,661 | $ 2,015 | $ 2,984 |  |  |
Number of shares authorized (in shares) | shares |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 3,000,000
Phantom unit Awards |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Trading days (days) |  |  |  |  |  |  |  |  | 20 days |  |  |  |  |  |  |
Shares available for grant (in shares) | shares |  |  |  |  |  |  |  | 5,000,000 |  |  |  |  |  |  | 2,000,000 |
Liabilities related to outstanding awards | $ |  |  |  |  |  |  |  |  |  | 4,257 |  | 4,257 |  | $ 3,480 |  |
Current liabilities related to outstanding awards | $ |  |  |  |  |  |  |  |  |  | 3,019 |  | 3,019 |  | 1,073 |  |
Noncurrent liabilities related to outstanding awards | $ |  |  |  |  |  |  |  |  |  | 1,238 |  | 1,238 |  | $ 2,407 |  |
Unrecognized compensation cost related to non-vested restricted units | $ |  |  |  |  |  |  |  |  |  | 7,662 |  | $ 7,662 |  |  |  |
Weighted average period for recognition (years) |  |  |  |  |  |  |  |  |  |  |  | 2 years 1 month 24 days |  |  |  |
Phantom unit Awards | Employees |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Granted, number of units (in shares) | shares |  |  |  |  | 1,275,000 | 1,210,000 | 1,179,500 | 365,000 |  |  |  |  |  |  |  |
Total unit-based compensation expense | $ |  |  |  |  |  |  |  | $ 1,123 |  | 754 | $ 1,619 | $ 1,859 | $ 2,839 |  |  |
Phantom Units Appreciation Rights | Employees |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Granted, number of units (in shares) | shares |  |  |  |  | 420,000 | 425,000 | 505,500 | 1,097,500 |  |  |  |  |  |  |  |
Restricted unit Awards |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Unrecognized compensation cost related to non-vested restricted units | $ |  |  |  |  |  |  |  |  |  | $ 349 |  | $ 349 |  |  |  |
Weighted average period for recognition (years) |  |  |  |  |  |  |  |  |  |  |  | 2 years 6 months 10 days |  |  |  |
Vested, number of units (in shares) | shares |  |  |  |  |  |  |  |  |  |  |  | 60,126 |  |  |  |
Restricted unit Awards | Employees |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Vesting period (years) |  |  |  |  |  |  |  |  |  |  |  | 3 years |  |  |  |
Restricted unit Awards | Non-employee directors |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Vesting period (years) |  |  |  |  |  |  |  |  |  |  |  | 4 years |  |  |  |
February Time Based Restricted Units |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of independent directors receiving grants | director |  |  |  |  |  | 3 |  |  |  |  |  |  |  |  |  |
February Time Based Restricted Units | Non-employee directors |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Granted, number of units (in shares) | shares |  |  |  |  |  | 18,000 |  |  |  |  |  |  |  |  |  |
February Time Based Restricted Units | Non-employee directors | Forecast |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Vested, number of units (in shares) | shares | 4,500 | 4,500 | 4,500 | 4,500 |  |  |  |  |  |  |  |  |  |  |  |

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