Financial Instruments (Details) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	May 31, 2014	Nov. 29, 2014	Nov. 30, 2013
Cross Currency Swaps [Abstract]
Fair value of cash-flow hedges	$ 3,594		$ 4,801
Cross currency hedge ineffectiveness	(23)
Accumulated Other Comprehensive Income Loss Cumulative Changes In Net Gain Loss From Cross Currency Swap	(59)	59	(91)
Foreign currency	2
Notional amount	98,738
Interest Rate Swap [Member]
Cross Currency Swaps [Abstract]
Value of hedged item in a fair value hedge	75,000
Change in Fair Value of Senior Notes	(5,334)
The fair values of the swaps (assets) in total	5,293
Hedge ineffectiveness	94
Second Cross Currency Swap [Member]
Cross Currency Swaps [Abstract]
Fair value of cash-flow hedges	3,594
Fiscal year of expiration	2015
Interest rate minimum	4.30%
Interest rate maximum	4.45%
Notional amount	$ 98,738