Debt - Private Placement Shelf Agreement (Details) - Maximum - Senior Notes $ in Thousands	Aug. 10, 2018 USD ($)
Prudential Private Placement Shelf Agreement
Debt Instrument [Line Items]
Agreement face amount	$ 100,000
MetLife Private Placement Shelf Agreement
Debt Instrument [Line Items]
Agreement face amount	$ 100,000

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.

No definition available.

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