Long-Term Debt Schedule of Interest Expense (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	May 31, 2017	May 31, 2016	May 31, 2017	May 31, 2016
Debt Disclosure [Abstract]
Interest expense	$ 3,942	$ 4,024	$ 7,888	$ 8,037
Less: capitalized interest	875	340	1,569	1,264
Net interest expense	$ 3,067	$ 3,684	$ 6,319	$ 6,773