Postretirement Benefits (Tables)

12 Months Ended

Nov. 30, 2020

Retirement Benefits [Abstract]

Schedule of Net Benefit Costs

The net periodic benefit cost of our Retirement Plan and DBO Plan consisted of the following (in thousands):

	Years Ended November 30,
	2020		2019		2018
Interest cost	$	1,950	$	2,478	$	2,252
Amortization of prior service cost	425		1,556		1,556
Service cost	1,077		958		1,085
Amortization of net actuarial loss	912		218		336
Settlement loss	—		356		—
Total	$	4,364	$	5,566	$	5,229