Debt Instrument, Discount Percent

No definition available.

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- Definition

Payments for Contributions to Subsidiaries

+ References

No definition available.

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- Definition

Proceeds from Long-Term Lines Of Credit, Contribution Amount

+ References

No definition available.

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- Definition

Proceeds from Subsidiary Entity, Dividends or Distributions

+ References

No definition available.

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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.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name Regulation S-X (SX)
-Number 210
-Section 12
-Subsection 04
-Paragraph a
-Publisher SEC

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name Regulation S-X (SX)
-Number 210
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-Publisher SEC

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Name Regulation S-X (SX)
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-Subparagraph Schedule II
-Publisher SEC

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Name Regulation S-X (SX)
-Number 210
-Section 9
-Subsection 06
-Publisher SEC

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 3
-Subparagraph (SX 210.12-04(a))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480678/235-10-S99-3

Reference 6: http://www.xbrl.org/2003/role/recommendedDisclosureRef
-Topic 810
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 11
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481231/810-10-45-11

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- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

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Period Type:	duration

- Definition

Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 835
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482900/835-30-50-1

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-Section 45
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-URI https://asc.fasb.org//1943274/2147482925/835-30-45-2

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481139/470-20-50-6

+ Details

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Period Type:	instant

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1B
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481139/470-20-50-1B

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1

+ Details

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- Definition

Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 3
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482925/835-30-45-3

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1D
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481139/470-20-50-1D

+ Details

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Period Type:	instant

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.19(b),22(b))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

+ References

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The fee, expressed as a percentage of the line of credit facility, for available but unused credit capacity under the credit facility.

+ References

No definition available.

+ Details

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- Definition

Dividends received on equity and other investments during the current period.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 230
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 16
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482740/230-10-45-16

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount of cash inflow from contractual arrangement with the lender, including but not limited to, letter of credit, standby letter of credit and revolving credit arrangements.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(f))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480678/235-10-S99-1

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
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-Topic 230
-SubTopic 10
-Section 45
-Paragraph 14
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482740/230-10-45-14

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Indebtedness divided by net capital.

+ References

No definition available.

+ Details

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- Definition

Amount of cash outflow for short-term and long-term debt. Excludes payment of lease obligation.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 230
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 15
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482740/230-10-45-15

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Including the current and noncurrent portions, carrying value as of the balance sheet date of uncollateralized debt obligations (with maturities initially due after one year or beyond the operating cycle if longer).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(22))
-SubTopic 10
-Topic 210
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 944
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(16)(a)(2))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479440/944-210-S99-1

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-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(16))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479853/942-210-S99-1

+ Details

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Balance Type:	credit
Period Type:	instant

- Details

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- Details

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- Details

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Condensed Financial Information of Registrant Condensed Financial Information of Registrant (Narratives) (Details)				12 Months Ended
	Feb. 13, 2024 USD ($)	Nov. 30, 2023 USD ($)	Mar. 08, 2017 USD ($)	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	Nov. 18, 2022 USD ($)	Mar. 31, 2021 USD ($)
Condensed Financial Statements, Captions [Line Items]
Capital distribution from subsidiaries				$ 6,200,000	$ 2,900,000	$ 5,200,000
Proceeds from dividends received				0	0	191,000,000
Revolving Credit Facility
Condensed Financial Statements, Captions [Line Items]
Repayments of debt			$ 320,000,000
Revolving Credit Facility \| Unsecured Notes Two
Condensed Financial Statements, Captions [Line Items]
Loan maximum borrowing capacity		$ 250,000,000					$ 200,000,000	$ 75,000,000
Drawn down amount under credit facility				200,000,000	25,000,000
Revolving Credit Facility \| Unsecured Notes Two \| Consolidated Insurance Subsidiary
Condensed Financial Statements, Captions [Line Items]
Drawn down amount under credit facility contributed				150,000,000
Revolving Credit Facility \| Unsecured Notes Two \| Subsequent Event
Condensed Financial Statements, Captions [Line Items]
Interest rate, effective percentage	6.84%
Drawn down amount under credit facility	$ 200,000,000
Undrawn portion of credit facility	$ 50,000,000
Unsecured notes \| Unsecured Notes One \| Notes payable \| Level 2
Condensed Financial Statements, Captions [Line Items]
Unsecured debt			$ 375,000,000	$ 375,000,000	375,000,000
Interest rate, stated percentage			4.40%	4.40%
Debt issuance costs			$ 3,400,000
Discount percent			99.847%
Interest rate, effective percentage			4.45%
Unsecured notes \| Unsecured Notes Two \| Notes payable \| Level 2
Condensed Financial Statements, Captions [Line Items]
Unsecured debt				$ 200,000,000	25,000,000
Minimum \| Revolving Credit Facility \| Unsecured Notes Two
Condensed Financial Statements, Captions [Line Items]
Commitment fee on undrawn portion of facility		0.125%		0.175%
Minimum \| Revolving Credit Facility \| Unsecured Notes Two \| Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate
Condensed Financial Statements, Captions [Line Items]
Debt to total capital ratio		0.30
Minimum \| Unsecured notes \| Unsecured Notes Two \| Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate \| Notes payable \| Level 2
Condensed Financial Statements, Captions [Line Items]
Basis spread on variable rate				1.125%
Maximum \| Revolving Credit Facility \| Unsecured Notes Two
Condensed Financial Statements, Captions [Line Items]
Debt to total capital ratio				0.271
Commitment fee on undrawn portion of facility		0.225%
Maximum \| Revolving Credit Facility \| Unsecured Notes Two \| Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate
Condensed Financial Statements, Captions [Line Items]
Debt to total capital ratio		0.20
Maximum \| Unsecured notes \| Unsecured Notes Two \| Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate \| Notes payable \| Level 2
Condensed Financial Statements, Captions [Line Items]
Basis spread on variable rate				1.50%
Parent Company
Condensed Financial Statements, Captions [Line Items]
Capital distribution from subsidiaries				$ 0	3,431,433	0
Payments for contributions to subsidiaries				$ 150,000,000	$ 0	$ 0