Derivative Instruments (Outstanding Foreign Exchange Forward Contracts) (Details) $ in Thousands	Jul. 31, 2021 USD ($)	[1]
Euro Member Countries, Euro
Derivative [Line Items]
Notional Amount	$ 123,157
United Kingdom, Pounds
Derivative [Line Items]
Notional Amount	82,236
Canada, Dollars
Derivative [Line Items]
Notional Amount	18,181
Japan, Yen
Derivative [Line Items]
Notional Amount	$ 7,120

[1] Amount reported is the U.S. Dollar notional amount outstanding as of July 31, 2021.