Exit Costs - Restructuring Reserve (Details) $ in Thousands	9 Months Ended
	Aug. 31, 2016 USD ($)
Restructuring Reserve [Roll Forward]
Expenses	$ 1,854
Severance Costs [Member]
Restructuring Reserve [Roll Forward]
Balance at November 30, 2015	4,805
Expenses	279
Payments	(5,084)
Liability at August 31, 2016	0
Other Costs [Member]
Restructuring Reserve [Roll Forward]
Balance at November 30, 2015	0
Expenses	300
Payments	(300)
Liability at August 31, 2016	0
Contract Termination Costs [Member]
Restructuring Reserve [Roll Forward]
Balance at November 30, 2015	0
Expenses	1,234
Payments	(1,234)
Liability at August 31, 2016	0
Total Restructuring Costs [Member]
Restructuring Reserve [Roll Forward]
Balance at November 30, 2015	4,805
Expenses	1,813
Payments	(6,618)
Liability at August 31, 2016	0
Accelerated Amortization of Restricted Stock and Restricted Cash Awards [Member]
Restructuring Reserve [Roll Forward]
Expenses	$ 41