Derivative Instruments and Hedging Activities Derivatives and Hedging Activities - FX Forwards (Details) $ in Thousands	Sep. 30, 2019 USD ($) € / $
Derivative [Line Items]
Derivative, Average Forward Exchange Rate \| € / $	1
Investment Owned, Foreign Currency Contract, Current Value	$ 9,240
Expected maturity amounts of foreign currency derivatives in year two	$ 6,750

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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