Benefit Plans - Components of Net Periodic Pension (Benefit) Cost (Detail) - USD ($) $ in Thousands	12 Months Ended
	Nov. 30, 2016	Nov. 30, 2015	Nov. 30, 2014
U.S Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 400	$ 250	$ 250
Interest cost on projected benefit obligation	2,311	2,340	2,429
Expected return on plan assets	(2,917)	(3,357)	(3,125)
Net amortization	0	0	(94)
Settlement losses	0	244	0
Net periodic pension income	(206)	(523)	(540)
German Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	0	0	40
Interest cost on projected benefit obligation	529	523	801
Net amortization	326	325	244
Net periodic pension income	$ 855	$ 848	$ 1,085