Debt Instrument, Discount Percent

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- Definition

Payments for Contributions to Subsidiaries

+ 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

No definition available.

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- 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
-Publisher FASB
-Name Accounting Standards Codification
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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
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-Section 50
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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
-Publisher FASB
-Name Accounting Standards Codification
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- 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

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- 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.

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- Definition

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

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- Definition

Indebtedness divided by net capital.

+ References

No definition available.

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- Definition

The cash outflow during the period from the repayment of aggregate short-term and long-term debt. Excludes payment of capital lease obligations.

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-Publisher FASB
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Condensed Financial Information of Registrant Condensed Financial Information of Registrant (Narratives) (Details)		12 Months Ended
	Mar. 08, 2017 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)	Mar. 31, 2021 USD ($)	Mar. 29, 2017 USD ($)
Condensed Financial Statements, Captions [Line Items]
Capital distribution from subsidiaries		$ 5,200,000	$ 12,100,000	$ 5,200,000
Proceeds from dividends received		$ 191,000,000	121,000,000	114,431,433
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					$ 75,000,000	$ 50,000,000
Unsecured Debt \| Unsecured Notes One
Condensed Financial Statements, Captions [Line Items]
Interest rate, stated percentage	4.40%
Debt issuance costs	$ 3,400,000
Discount percent	99.847%
Interest rate, effective percentage	4.45%
Minimum \| Revolving Credit Facility \| Unsecured Notes Two
Condensed Financial Statements, Captions [Line Items]
Commitment fee on undrawn portion of facility		0.125%
Minimum \| Revolving Credit Facility \| Unsecured Notes Two \| LIBOR
Condensed Financial Statements, Captions [Line Items]
Debt to total capital ratio					0.30
Maximum \| Revolving Credit Facility \| Unsecured Notes Two
Condensed Financial Statements, Captions [Line Items]
Debt to total capital ratio		0.149
Commitment fee on undrawn portion of facility		0.225%
Maximum \| Revolving Credit Facility \| Unsecured Notes Two \| LIBOR
Condensed Financial Statements, Captions [Line Items]
Debt to total capital ratio					0.20
Parent Company
Condensed Financial Statements, Captions [Line Items]
Capital distribution from subsidiaries		$ 0	0	30,068,567
Payments for contributions to subsidiaries		$ 0	$ 30,000,000	$ 125,000