Accumulated Other Comprehensive Loss (Amounts Reclassified from Accumulated Other Comprehensive Loss) (Details) - USD ($) $ in Thousands		12 Months Ended
		Nov. 30, 2021	Nov. 30, 2020	Nov. 30, 2019
Equity [Abstract]
Amortization of net actuarial loss		$ 1,575	$ 963	$ 218
Amortization of prior service cost		86	425	1,556
Settlement loss		0	0	356
Total reclassifications	[1]	$ 1,661	$ 1,388	$ 2,130

[1] The accumulated other comprehensive loss components are included in the computation of net periodic benefit costs as further discussed in Note 22 – Postretirement Benefits.