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Acquisition Of NinetyFive 5 LLC (Narrative) (Details) - USD ($)
$ in Thousands
 12 Months Ended
Mar. 11, 2013
Aug. 31, 2015
Aug. 31, 2014
Aug. 31, 2013
Dec. 31, 2012
Potential annual contingent payment   $ 2,565 $ 2,530 $ 4,109  
Total revenue   209,941 205,165 190,924  
Net income   11,116 $ 18,067 $ 14,319  
NinetyFive 5 [Member]          
Purchase price in cash $ 4,200        
Potential annual contingent payment $ 8,500        
Acquisition costs   $ 100      
Total revenue         $ 8,700
Net income         $ 1,900
Ownership percentage prior to acquisition   10.50%