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Valuation and Qualifying Accounts and Reserves (Detail) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Investment Asset Valuation Reserves, Mortgage Loans |  |  |
Valuation and Qualifying Accounts Disclosure [Line Items] |  |  |
Balance at Beginning of Period | $ 0 | $ 0 | $ 0
Charged (Credited) to Costs and Expenses | 0 | 0 | 0
Charged (Credited) to Other Accounts | 0 |  | 0
Other Deductions | 0 | 0 | 0
Balance at End of Period | 0 | 0 | 0
Investment Asset Valuation Reserves, Real Estate |  |  |
Valuation and Qualifying Accounts Disclosure [Line Items] |  |  |
Balance at Beginning of Period | 0 | 0 | 0
Charged (Credited) to Costs and Expenses | 0 | 0 | 0
Charged (Credited) to Other Accounts | 0 | 0 | 0
Other Deductions | 0 | 0 | 0
Balance at End of Period | 0 | 0 | 0
Allowance for Doubtful Accounts, Premiums, Accounts and Notes Receivable |  |  |
Valuation and Qualifying Accounts Disclosure [Line Items] |  |  |
Balance at Beginning of Period | 2,996 | 2,900 | 2,754
Charged (Credited) to Costs and Expenses | 326 | 96 | 146
Charged (Credited) to Other Accounts | 0 | 0 | 0
Other Deductions | 0 | 0 | 0
Balance at End of Period | 3,322 | 2,996 | 2,900
Allowance for Doubtful Accounts, Deferred Tax Asset Valuation Allowance |  |  |
Valuation and Qualifying Accounts Disclosure [Line Items] |  |  |
Balance at Beginning of Period | 0 | 0 | 0
Charged (Credited) to Costs and Expenses | 0 |  | 0
Charged (Credited) to Other Accounts | 0 | 0 | 0
Other Deductions | 0 | 0 | 0
Balance at End of Period | 0 | 0 | 0
Allowance for Doubtful Accounts, Reinsurance Receivable |  |  |
Valuation and Qualifying Accounts Disclosure [Line Items] |  |  |
Balance at Beginning of Period | 8,992 | 8,992 | 8,992
Charged (Credited) to Costs and Expenses | 0 |  | 0
Charged (Credited) to Other Accounts | 0 | 0 | 0
Other Deductions | 0 | 0 | 0
Balance at End of Period | $ 8,992 | $ 8,992 | $ 8,992

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- Definition Amount of valuation and qualifying accounts and reserves. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SX 210.12-09(Column B)) -URI https://asc.fasb.org/extlink&oid=120395691&loc=d3e24092-122690 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SX 210.12-09(Column E)) -URI https://asc.fasb.org/extlink&oid=120395691&loc=d3e24092-122690 + Details
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- Definition Amount of increase in valuation and qualifying accounts and reserves from charge to cost and expense. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SX 210.12-09(Column C)(1)) -URI https://asc.fasb.org/extlink&oid=120395691&loc=d3e24092-122690 + Details
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- Definition Amount of decrease in valuation and qualifying accounts and reserves. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SX 210.12-09(Column D)) -URI https://asc.fasb.org/extlink&oid=120395691&loc=d3e24092-122690 + Details
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