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Earnings Per Share (Details Textuals)
Jun. 30, 2012
Sep. 30, 2011
Jun. 30, 2012
Stock Options
Jun. 30, 2011
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Common stock options outstanding 10,486,348 8,068,700 [1] 266,000 258,000
[1] Amounts derived from the audited financial statements for the fiscal year ended September 30, 2011.