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share</value></securityTitle><transactionDate><value>2003-07-01</value></transactionDate><transactionCoding><transactionFormType>4</transactionFormType><transactionCode>S</transactionCode><equitySwapInvolved>0</equitySwapInvolved></transactionCoding><transactionTimeliness><value></value></transactionTimeliness><transactionAmounts><transactionShares><value>8000</value><footnoteId id="F1" /></transactionShares><transactionValue><value>35.9</value></transactionValue><transactionAcquiredDisposedCode><value>D</value></transactionAcquiredDisposedCode></transactionAmounts><postTransactionAmounts><sharesOwnedFollowingTransaction><value>783669</value></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>D</value></directOrIndirectOwnership></ownershipNature></nonDerivativeSecurity><footnotes><footnote id="F1">Sales were made pursuant to a Rule 10b5-1 plan established by the Reporting Person and approved by the Issuer.</footnote></footnotes><ownerSignature><signatureName>Douglas B. Cannon (Attorney in Fact for David L. Steffy)</signatureName><signatureDate>2003-07-02</signatureDate></ownerSignature></ownershipDocument>

