Long-Term Debt Schedule of Interest Expense (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Aug. 31, 2015	Aug. 31, 2014	Aug. 31, 2015	Aug. 31, 2014
Debt Disclosure [Abstract]
Interest expense	$ 4,060	$ 4,121	$ 12,221	$ 12,359
Less: capitalized interest	1,392	2,161	5,483	4,563
Net interest expense	$ 2,668	$ 1,960	$ 6,738	$ 7,796