Derivative Instruments (Outstanding Foreign Currency Forward Contracts) (Details) - USD ($) $ in Thousands	Nov. 30, 2020	Nov. 30, 2019
Derivative [Line Items]
Derivative contracts, notional value	$ 69,471	$ 68,408
Derivative assets (liabilities), at fair value	1,442	(80)
Interest rate swap
Derivative [Line Items]
Derivative contracts, notional value	142,500	148,125
Derivative assets (liabilities), at fair value	(6,855)	(2,054)
Forward contracts to sell U.S. dollars
Derivative [Line Items]
Derivative contracts, notional value	69,031	66,951
Derivative assets (liabilities), at fair value	1,445	(85)
Forward contracts to purchase U.S. dollars
Derivative [Line Items]
Derivative contracts, notional value	440	1,457
Derivative assets (liabilities), at fair value	$ (3)	$ 5