Postretirement Benefits (Tables)

12 Months Ended

Nov. 30, 2019

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,
	2019		2018		2017
Interest cost	$	2,478	$	2,252	$	2,274
Amortization of prior service cost	1,556		1,556		1,556
Service cost	958		1,085		1,046
Amortization of net actuarial loss	218		336		142
Settlement loss	356		—		—
Total	$	5,566	$	5,229	$	5,018