Benefit Plans - Components of Net Periodic Pension (Benefit) Cost (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	May 31, 2016	May 31, 2015	May 31, 2016	May 31, 2015
U.S Pension Plan [Member]
Components of net periodic pension cost (income):
Service cost	$ 100	$ 63	$ 200	$ 126
Interest cost on projected benefit obligation	587	585	1,174	1,170
Expected return on plan assets	(684)	(848)	(1,460)	(1,696)
Net periodic pension cost (income)	3	(200)	(86)	(400)
German Pension Plan [Member]
Components of net periodic pension cost (income):
Interest cost on projected benefit obligation	135	127	265	263
Net amortization	83	79	163	163
Net periodic pension cost (income)	$ 218	$ 206	$ 428	$ 426