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Subsequent Event - Narrative (Details) - Subsequent Event	Jul. 30, 2019 USD ($)
Oaktown Re III Ltd [Member] | 2019 ILN Notes | Mortgage-linked Debt
Subsequent Event [Line Items]
Proceeds from issuance of notes	$ 326,900,000
Third-Party Reinsurers | 2019 ILN Transaction
Subsequent Event [Line Items]
Aggregate excess of loss reinsurance retained by company	123,400,000
Third-Party Reinsurers | 2019 ILN Transaction | Maximum
Subsequent Event [Line Items]
Aggregate excess of loss reinsurance coverage	326,900,000
Anticipated payment related to annual operating expenses	$ 250,000

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- Definition

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+ References

No definition available.

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- Definition

The cash inflow during the period from additional borrowings in aggregate debt. Includes proceeds from short-term and long-term debt.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 14
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3255-108585

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- Definition

Stated amount that is the upper retention limit per entity policy.

+ References

No definition available.

+ Details

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- Definition

Amount of risk reinsured in excess of stated retention per company policy.

+ References

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- Definition

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

+ References

No definition available.

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