INVESTMENTS - Mortgage Loans (Details) - USD ($)	12 Months Ended
Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial	$ 529,075,000	$ 616,368,000
Allowance for expected credit losses	(23,378,000)	(6,220,000)	$ 0	$ 0
Total mortgage loans held for investment	$ 505,697,000	$ 610,148,000
Commercial (as a percent)	105.00%	101.00%
Allowance for expected credit losses (as a percent)	(5.00%)	(1.00%)
Total mortgage loans, held-for investment (as a percent)	100.00%	100.00%
Debt service coverage ratio, in excess of	1.7	1.9
Loan-to-value ratio, percent (less than)	78.00%	71.00%
Commercial mortgage loans, past due amount	$ 0	$ 0
Mortgage loans \| Sector Concentration Risk \| Mortgage Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Concentration risk, percentage	43.00%	41.00%

Financing Receivable, After Allowance For Credit Loss, To Total, Percent

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- Definition

Financing Receivable, Allowance For Credit Loss, Real Estate, Percentage of Total

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- Definition

This item represents the amortized cost of commercial mortgage loans held for investments that are past due.

+ References

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- Definition

Weighted Average Debt Service Coverage Ratios

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- Definition

Weighted average loan-to-value ratios

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- Definition

Percentage, before allowance for credit loss, of financing receivable to total financing receivable.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name Regulation S-K (SK)
-Number 229
-Section 1405
-Paragraph c
-Publisher SEC

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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

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- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

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- Definition

Amount excluding accrued interest, of allowance for credit loss on financing receivable. Excludes net investment in lease.

+ References

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- Definition

Amortized cost excluding accrued interest, before allowance for credit loss, of financing receivable. Excludes net investment in lease.

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- Definition

The balance represents the amount of loans that are secured by real estate mortgages, offset by the reserve to cover probable credit losses on the loan portfolio.

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