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Earnings per Share (Details) (USD $)
In Thousands, except Per Share data, unless otherwise specified
 3 Months Ended
Nov. 30, 2014
Nov. 30, 2013
EPS:    
Net income $ 395us-gaap_NetIncomeLoss $ 1,064us-gaap_NetIncomeLoss
Less: accrued preferred stock dividends (19)us-gaap_PreferredStockDividendsIncomeStatementImpact (19)us-gaap_PreferredStockDividendsIncomeStatementImpact
Net income available for common shareholders $ 376us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic $ 1,045us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic
Earnings per common share - basic and diluted (in dollars per share) $ 0.08us-gaap_EarningsPerShareBasicAndDiluted $ 0.21us-gaap_EarningsPerShareBasicAndDiluted