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Divestitures (Income (Loss) from Discontinued Operations) (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 24 Months Ended
Feb. 28, 2014
Feb. 28, 2013
Nov. 30, 2013
Lines
Discontinued Operations and Disposal Groups [Abstract]      
Number of product lines divested     11
Revenue $ 0 $ 11,175  
Income (loss) before income taxes 0 1,685  
Income tax (benefit) provision 0 137  
Gain on sale, net of tax 0 19,757  
Income (loss) from discontinued operations, net $ 0 $ 21,305