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Borrowings under Repurchase Agreements Borrowings under Repurchase Agreements Schedule of Repurchase Agreement by Counterparty (Details)	3 Months Ended	12 Months Ended
	Mar. 31, 2020	Dec. 31, 2019
Repurchase Agreement Counterparty [Line Items]
Repurchase Agreement Counterparty Concentration Risk Threshold	10.00%
Repurchase Agreement Counterparty, Weighted Average Maturity of Agreements	39 days	39 days

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- Definition

Repurchase Agreement Counterparty Concentration Risk Threshold

+ References

No definition available.

+ Details

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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.

+ Details

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- Definition

Weighted average maturity (weighted by amount of the agreement) of repurchase agreements with the counterparty, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(m)(1)(i)(B)(iii))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

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