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Discontinued Operations (Details)
$ in Thousands
3 Months Ended 6 Months Ended
Feb. 29, 2016
USD ($)
Feb. 28, 2015
USD ($)
Feb. 29, 2016
USD ($)
Property
Feb. 28, 2015
USD ($)
May. 31, 2015
store
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]          
Number of Leased Properties | Property     2    
Loss from discontinued operations before income taxes $ (1,015) $ (4,321) $ (1,094) $ (5,257)  
Income tax (expense) benefit (9) 79 5 177  
Loss from discontinued operations, net of tax (1,024) (4,242) (1,089) (5,080)  
Auto Parts Stores          
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]          
Number of Stores | store         7
Auto Parts Stores | Discontinued Operations          
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]          
Number of Stores | store         6
Revenues 0 3,140 0 6,770  
Loss from Discontinued Operations, Net of Tax          
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]          
Long-lived assets $ 673 $ 2,666 $ 673 $ 2,666