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Subsequent Event (Details) - USD ($)
$ in Thousands
12 Months Ended
Jan. 22, 2016
Nov. 30, 2015
Nov. 30, 2014
Nov. 30, 2013
Jan. 12, 2016
Subsequent Event [Line Items]          
Stock Repurchase Program, Number of Shares Authorized to be Repurchased   4,000,000      
Payments for Repurchase of Common Stock   $ 567 $ 546 $ 8,488  
Subsequent Event [Member]          
Subsequent Event [Line Items]          
Stock Repurchase Program, Number of Shares Authorized to be Repurchased         10,000,000
Stock Repurchased During Period, Shares 3,025,000        
Payments for Repurchase of Common Stock $ 30,500