Life Insurance Policies - Narrative (Details)	Mar. 31, 2020 USD ($) Policies	Dec. 31, 2019 USD ($) Policies
Product Information [Line Items]
Number of life insurance policies \| Policies	2,870	2,896
Face value	$ 1,124,578,878	$ 1,129,545,328
Life insurance policies	$ 178,822,344	$ 172,242,734
Life Settlement Contracts
Product Information [Line Items]
Number of life insurance policies \| Policies	470	483
Face value	$ 900,000,000	$ 900,000,000
Life insurance policies	$ 174,000,000.0	$ 168,700,000
Viatical Settlement Contract
Product Information [Line Items]
Number of life insurance policies \| Policies	2,400	2,413
Face value	$ 200,000,000	$ 200,000,000
Life insurance policies	$ 4,800,000	$ 3,500,000

Fair value amount of life settlement contracts accounted for under the fair value method.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 325
-SubTopic 30
-Section 50
-Paragraph 8
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=73718008&loc=d3e42732-111610

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Face value (death benefits) of the life insurance policies underlying the life settlement contracts accounted for under the fair value method.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 325
-SubTopic 30
-Section 50
-Paragraph 8
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=73718008&loc=d3e42732-111610

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Number of life settlement contracts accounted for under the fair value method.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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-Name Accounting Standards Codification
-Topic 325
-SubTopic 30
-Section 50
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