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Income Taxes (Unrecognized Tax Benefits) (Details) (USD $)
In Thousands
Jun. 30, 2011
Sep. 30, 2010
Income Taxes    
Gross liability $ 16,269 $ 10,586
Amount that would impact Woodward's effective tax rate, if recognized, net of expected offsetting adjustments 14,441 8,720
Accrued interest and penalties $ 2,072 $ 1,431