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Future Undiscounted Losses (USD $)
In Thousands, unless otherwise specified
Sep. 30, 2012
Summary Of Significant Accounting Policies [Line Items]  
EstimatedUndiscountedUltimateLossesInNextTwelveMonths $ 2,948
EstimatedUndiscountedUltimateLossesInYearTwo 1,328
EstimatedUndiscountedUltimateLossesInYearThree 821
EstimatedUndiscountedUltimateLossesInYearFour 494
EstimatedUndiscountedUltimateLossesInYearFive 305
EstimatedUndiscountedUltimateLossesThereafter $ 968