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Fair Value - Summary of Assets and Liabilities Measured at Estimated Fair Value on Recurring basis (Details) - Recurring Basis - USD ($)
$ in Thousands
Feb. 29, 2016
Nov. 30, 2015
Liabilities    
Derivative financial instruments $ 685 $ 611
Total liabilities 685 611
Level 1    
Liabilities    
Derivative financial instruments 0 0
Total liabilities 0 0
Level 2    
Liabilities    
Derivative financial instruments 685 611
Total liabilities $ 685 $ 611