Investments - Commercial Mortgage Loan Participations, Internal Credit Assessment (Details) $ in Thousands	Jun. 30, 2022 USD ($) loan	Dec. 31, 2021 USD ($) loan
Financing Receivable, Credit Quality Indicator [Line Items]
Less allowance for credit losses on the investment pool	$ (862)	$ (827)
Less allowance for credit losses on individual loans	$ (247)	$ 0
Commercial mortgage participations
Financing Receivable, Credit Quality Indicator [Line Items]
Number of Loans \| loan	20	22
Current Fiscal Year	$ 0	$ 0
Fiscal Year before Current Fiscal Year	0	25,036
Two Years before Current Fiscal Year	27,598	33,691
Three Years before Current Fiscal Year	30,956	48,214
Four Years before Current Fiscal Year	48,251	35,729
More than Five Years before Current Fiscal Year	36,000
Commercial mortgage loans receivable	142,805	142,670
Carrying value, net of allowance	$ 141,696	$ 141,843
Commercial mortgage participations \| Low
Financing Receivable, Credit Quality Indicator [Line Items]
Number of Loans \| loan	13	14
Current Fiscal Year	$ 0	$ 0
Fiscal Year before Current Fiscal Year	0	23,636
Two Years before Current Fiscal Year	26,403	11,925
Three Years before Current Fiscal Year	11,685	41,209
Four Years before Current Fiscal Year	41,224	35,729
More than Five Years before Current Fiscal Year	36,000
Commercial mortgage loans receivable	$ 115,312	$ 112,499
Commercial mortgage participations \| Medium
Financing Receivable, Credit Quality Indicator [Line Items]
Number of Loans \| loan	5	6
Current Fiscal Year	$ 0	$ 0
Fiscal Year before Current Fiscal Year	0	1,400
Two Years before Current Fiscal Year	1,195	17,173
Three Years before Current Fiscal Year	15,161	0
Four Years before Current Fiscal Year	0	0
More than Five Years before Current Fiscal Year	0
Commercial mortgage loans receivable	$ 16,356	$ 18,573
Commercial mortgage participations \| High
Financing Receivable, Credit Quality Indicator [Line Items]
Number of Loans \| loan	2	2
Current Fiscal Year	$ 0	$ 0
Fiscal Year before Current Fiscal Year	0	0
Two Years before Current Fiscal Year	0	4,593
Three Years before Current Fiscal Year	4,110	7,005
Four Years before Current Fiscal Year	7,027	0
More than Five Years before Current Fiscal Year	0
Commercial mortgage loans receivable	$ 11,137	$ 11,598

Financing Receivable, Allowance For Credit Loss, Collateral Dependent Elected For Practical Expedient

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- Definition

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

+ References

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-Publisher FASB
-Name Accounting Standards Codification
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Amortized cost excluding accrued interest, before allowance for credit loss, of financing receivable. Excludes net investment in lease.

+ References

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Amortized cost of financing receivable originated more than five years prior to current fiscal year. Excludes net investment in lease.

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Amortized cost of financing receivable originated three years prior to current fiscal year. Excludes net investment in lease.

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Amortized cost of financing receivable originated two years prior to current fiscal year. Excludes net investment in lease.

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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.

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