Long-Term Debt Schedule of Interest Expense (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	May 31, 2014	May 31, 2013	May 31, 2014	May 31, 2013
Debt Disclosure [Abstract]
Interest expense	$ 4,125	$ 4,142	$ 8,238	$ 8,296
Less: capitalized interest	1,422	263	2,402	455
Net interest expense	$ 2,703	$ 3,879	$ 5,836	$ 7,841