Benefit Plans - Components of Net Periodic Pension (Benefit) Cost (Detail) - USD ($) $ in Thousands	12 Months Ended
	Nov. 30, 2015	Nov. 30, 2014	Nov. 30, 2013
U.S Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 250	$ 250	$ 225
Interest cost on projected benefit obligation	2,340	2,429	2,201
Expected return on plan assets	(3,357)	(3,125)	(2,698)
Net amortization	0	(94)	326
Settlement losses	244	0	0
Net periodic pension income	(523)	(540)	54
German Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	0	40	67
Interest cost on projected benefit obligation	523	801	902
Net amortization	325	244	179
Net periodic pension income	$ 848	$ 1,085	$ 1,148