Note 9 - Accumulated Other Comprehensive Income (Loss) - Components of Accumulated Other Comprehensive Income (Loss) (Details) (Parentheticals) - USD ($) $ in Thousands	Feb. 29, 2020	Nov. 30, 2019
AOCI Including Portion Attributable to Noncontrolling Interest [Member]
Tax on interest swap	$ (7,201)	$ (4,300)
Tax on cash flow hedge	125	21
Tax on defined benefit pension plans adjustment	81,198	81,891
AOCI Attributable to Parent [Member]
Tax on interest swap	(7,201)	(4,300)
Tax on cash flow hedge	125	21
Tax on defined benefit pension plans adjustment	$ 81,198	$ 81,891