Related-Party Transactions - Management Agreement (Details) - USD ($) $ in Millions |
3 Months Ended | ||
|---|---|---|---|
Mar. 31, 2026 |
Mar. 31, 2025 |
Dec. 31, 2025 |
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| Related-Party Transactions | |||
| Granted (in shares) | 1,506,028 | ||
| Employee Stock | |||
| Related-Party Transactions | |||
| Share-based expense | $ 0.3 | $ 0.2 | |
| S P T Management L L C | |||
| Related-Party Transactions | |||
| Management fee expense | 25.1 | 23.4 | |
| Base management fee payable | 25.1 | $ 25.3 | |
| Accrued incentive fee | 5.6 | 10.1 | |
| Unpaid incentive fee | 5.6 | 3.5 | |
| Executive compensation expense | 1.7 | $ 1.2 | |
| Unpaid reimbursable compensation | $ 3.0 | $ 2.8 | |
| S P T Management L L C | Restricted Stock Awards | |||
| Related-Party Transactions | |||
| Vesting period | 3 years | ||
| Granted (in shares) | 185,420 | 416,780 | |
| Grant date values | $ 3.3 | $ 8.4 | |
| Share-based expense | 2.2 | 2.4 | |
| S P T Management L L C | Employee Stock | |||
| Related-Party Transactions | |||
| Share-based expense | $ 0.0 | $ 0.0 | |
| X | ||||||||||
- Definition Represents the management incentive fee for the operation and management of the entity's business accrued during the period. No definition available.
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- Definition Represents the base management fees incurred, as contractually stipulated, for the operation and management of the entity's business during the reporting period. No definition available.
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- Definition Represents the base management fees payable as of the balance sheet date, for the operation and management of the entity's business. No definition available.
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- Definition Represents the executive compensation expense and other reimbursable expenses incurred by the related party during the period. No definition available.
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- Definition Represents the executive compensation expense and other reimbursable expenses payable to the related party as of the balance sheet date. No definition available.
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- Definition Represents incentive fees payable to related party. No definition available.
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- Definition Fair value of share-based awards granted in the period for which the grantee gained the right by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash. No definition available.
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- Definition Amount of expense for award under share-based payment arrangement. Excludes amount capitalized. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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