Insurance Contracts - Additional Information (Details) $ in Thousands, € in Millions, £ in Millions |
3 Months Ended | 6 Months Ended | ||||||||||
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Jun. 30, 2024
USD ($)
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Jun. 30, 2023
USD ($)
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Jun. 30, 2024
USD ($)
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Jun. 30, 2023
USD ($)
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Jun. 30, 2024
GBP (£)
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Jun. 30, 2024
EUR (€)
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Mar. 31, 2024
USD ($)
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Dec. 31, 2023
USD ($)
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Jun. 30, 2023
GBP (£)
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Jun. 30, 2023
EUR (€)
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Mar. 31, 2023
USD ($)
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Dec. 31, 2022
USD ($)
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| Insurance [Line Items] | ||||||||||||
| Reinsurance Recoverable Credit Exposure | $ 176,000 | $ 176,000 | $ 128,000 | |||||||||
| Estimated Future Premium Payments Weighted Average Discounted Rate | 3.20% | 3.20% | 3.20% | 3.20% | 3.20% | |||||||
| Reinsurance Payable | $ 140,000 | $ 140,000 | $ 90,000 | |||||||||
| Weighted average period of future premiums | 7 years 7 months 6 days | 8 years | ||||||||||
| Uncollectable premium receivables | 3,000 | $ 3,000 | 4,000 | |||||||||
| Reinsurance recoveries of losses included in losses and loss expenses | (98,000) | $ (45,000) | ||||||||||
| Amortization of Intangible Assets | 8,000 | $ 7,000 | 21,000 | 13,000 | ||||||||
| Intangible assets, less accumulated amortization | 285,000 | 285,000 | 307,000 | |||||||||
| Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest | 1,419,000 | 1,303,000 | 1,419,000 | 1,303,000 | $ 1,418,000 | $ 1,415,000 | $ 1,307,000 | $ 1,305,000 | ||||
| Past Due Premiums | 1,000 | 0 | $ 1,000 | $ 0 | ||||||||
| Loss Reserves [Member] | ||||||||||||
| Insurance [Line Items] | ||||||||||||
| Weighted average risk-free rate used to discount loss reserves | 4.40% | 4.60% | ||||||||||
| United Kingdom, Pounds | ||||||||||||
| Insurance [Line Items] | ||||||||||||
| Financial Guarantee Insurance Contracts, Premium Receivable | 70,000 | 76,000 | $ 70,000 | $ 76,000 | £ 55 | £ 60 | ||||||
| Euro Member Countries, Euro | ||||||||||||
| Insurance [Line Items] | ||||||||||||
| Financial Guarantee Insurance Contracts, Premium Receivable | $ 12,000 | $ 14,000 | $ 12,000 | $ 14,000 | € 11 | € 12 | ||||||
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- Definition Weighted average discounted rate of estimated future premium payments to be paid by the VIEs. No definition available.
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- Definition Insurance [Line Items] No definition available.
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- Definition Past Due Premiums No definition available.
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- Definition Reinsurance Recoverable Credit Exposure No definition available.
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- Definition The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition This element represents the weighted average risk free rate used to discount the claim liability related to financial guarantee insurance contracts. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of the premium receivable for financial guarantee insurance contracts reported in the statement of financial position. This element primarily would consist of those financial guarantee insurance contracts which premiums are to be collected over the contract period, but may, on occasion, include premiums which are to be collected in full at inception, but which straddle a financial reporting period. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Weighted average period over which premium receivable for financial guarantee insurance contracts is collected where premium is received over the contract period, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Sum of the carrying amounts of all intangible assets, excluding goodwill, as of the balance sheet date, net of accumulated amortization and impairment charges. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition The carrying value as of the balance sheet date of the estimated valuation allowance to reduce gross premiums receivable to net realizable value. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount of reduction of provision for policy benefits and costs incurred for policies ceded. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition The carrying amount as of the balance sheet date of the known and estimated amounts owed to insurers under reinsurance treaties or other arrangements. No definition available.
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- Definition Amount of equity (deficit) attributable to parent and noncontrolling interest. Excludes temporary equity. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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