Postretirement Benefits (Tables)

12 Months Ended

Nov. 30, 2018

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,
	2018		2017		2016
Interest cost	$	2,252	$	2,274	$	2,285
Amortization of prior service cost	1,556		1,556		1,556
Service cost	1,085		1,046		1,045
Amortization of net actuarial loss	336		142		79
Total	$	5,229	$	5,018	$	4,965