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Defined Benefit Plans (Details Textual) (USD $)
In Thousands, unless otherwise specified |
9 Months Ended |
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Jun. 30, 2012
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| Defined Benefit Plans (Textual) [Abstract] | |
| Number of defined benefit pension plans | 3 |
| Number of 401K Plans | 2 |
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Pension Plans [Member]
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| Defined Benefit Plan Disclosure [Line Items] | |
| Contribution to pension plans | $ 8,304 |
| Additional Contribution to pension plans | 1,016 |
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Supplemental Executive Retirement Plan [Member]
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| Defined Benefit Plan Disclosure [Line Items] | |
| Contribution to pension plans | 396 |
| Additional Contribution to pension plans | $ 131 |
| Number of executive officers | 3 |
| Number of former executive officers | 2 |