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Derivatives and Hedging Activities (Narrative) (Details) - USD ($)
$ in Millions
Sep. 30, 2021
Jun. 30, 2021
Apr. 30, 2019
Foreign exchange contracts      
Derivative [Line Items]      
Derivative, notional amount $ 33.7 $ 27.9  
Interest rate swap agreement      
Derivative [Line Items]      
Derivative, notional amount     $ 100.0
Interest Rate Swap, Maturing April 30, 2024      
Derivative [Line Items]      
Derivative, notional amount     50.0
Interest Rate Swap, Maturing April 30, 2026      
Derivative [Line Items]      
Derivative, notional amount     $ 50.0