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Subsequent Event (Details) (USD $)
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9 Months Ended | |
|---|---|---|
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Aug. 04, 2012
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May 21, 2012
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| Subsequent Event (Textual) [Abstract] | ||
| Common stock cash dividends per share, declared | $ 0.30 | |
| Common stock cash dividends per share, declared date | Aug. 20, 2012 | |
| Common stock cash dividends per share, paid date | Sep. 12, 2012 | |
| Common stock cash dividends per share, date of record | Aug. 31, 2012 |