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Income Taxes (Tables) | 6 Months Ended
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Mar. 31, 2012
Income Taxes |
Tax Expense and Effective Tax Rate |
|  | Three-Months Ending March 31, |  |  | Six-Months Ending March 31, |
|  | 2012 |  |  | 2011 |  |  | 2012 |  |  | 2011 |
Earnings before income taxes |  | $ | 54,038 |  |  | $ | 46,487 |  |  | $ | 94,214 |  |  | $ | 77,962 |
Income tax expense |  |  | 15,287 |  |  |  | 14,397 |  |  |  | 27,046 |  |  |  | 23,473 |
Effective tax rate |  |  | 28.3 | % |  |  | 31.0 | % |  |  | 28.7 | % |  |  | 30.1 | %
Unrecognized Tax Benefits |
|  | March 31, 2012 |  |  | September 30, 2011 |
Gross liability |  | $ | 17,947 |  |  |  |  | $ | 16,931 |
Amount that would impact Woodward's effective tax rate, if recognized, net of expected offsetting adjustments |  |  | 15,322 |  |  |  |  |  | 14,078 |
Accrued Interest and Penalties |
|  | March 31, 2012 |  |  | September 30, 2011 |
Accrued interest and penalties |  | $ | 2,383 |  |  |  |  | $ | 1,989 |

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