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<?xml version="1.0" encoding="windows-1252"?> |
<ownershipDocument> |
| <schemaVersion> X0306 </schemaVersion> |
| <documentType> 4 </documentType> |
| <periodOfReport> 2020-04-30 </periodOfReport> |
| <notSubjectToSection16> false </notSubjectToSection16> |
| <issuer> |
| | <issuerCik> 0000035214 </issuerCik> |
| | <issuerName> FERRO CORP </issuerName> |
| | <issuerTradingSymbol> FOE </issuerTradingSymbol> |
| | </issuer> |
| <reportingOwner> |
| | <reportingOwnerId> |
| | | <rptOwnerCik> 0001474850 </rptOwnerCik> |
| | | <rptOwnerName> Ogilvie Marran H. </rptOwnerName> |
| | | </reportingOwnerId> |
| | <reportingOwnerAddress> |
| | | <rptOwnerStreet1> 6060 PARKLAND BLVD </rptOwnerStreet1> |
| | | <rptOwnerStreet2> SUITE 250 </rptOwnerStreet2> |
| | | <rptOwnerCity> MAYFIELD HEIGHTS </rptOwnerCity> |
| | | <rptOwnerState> OH </rptOwnerState> |
| | | <rptOwnerZipCode> 44124 </rptOwnerZipCode> |
| | | <rptOwnerStateDescription></rptOwnerStateDescription> |
| | | </reportingOwnerAddress> |
| | <reportingOwnerRelationship> |
| | | <isDirector> true </isDirector> |
| | | <isOfficer> false </isOfficer> |
| | | <isTenPercentOwner> false </isTenPercentOwner> |
| | | <isOther> false </isOther> |
| | | <officerTitle></officerTitle> |
| | | <otherText></otherText> |
| | | </reportingOwnerRelationship> |
| | </reportingOwner> |
| <nonDerivativeTable> |
| | <nonDerivativeHolding> |
| | | <securityTitle> |
| <value> Common Stock </value> |
| </securityTitle> |
| | | <postTransactionAmounts> |
| <sharesOwnedFollowingTransaction> |
| <value> 2000.00 </value> |
| </sharesOwnedFollowingTransaction> |
| </postTransactionAmounts> |
| | | <ownershipNature> |
| <directOrIndirectOwnership> |
| <value> D </value> |
| </directOrIndirectOwnership> |
| </ownershipNature> |
| | | </nonDerivativeHolding> |
| | </nonDerivativeTable> |
| <derivativeTable> |
| | <derivativeTransaction> |
| | | <securityTitle> |
| <value> Deferred Stock Units </value> |
| </securityTitle> |
| | | <conversionOrExercisePrice> |
| <footnoteId id="F1"/> |
| </conversionOrExercisePrice> |
| | | <transactionDate> |
| <value> 2020-04-30 </value> |
| </transactionDate> |
| | | <deemedExecutionDate></deemedExecutionDate> |
| | | <transactionCoding> |
| <transactionFormType> 4 </transactionFormType> |
| <transactionCode> A </transactionCode> |
| <equitySwapInvolved> false </equitySwapInvolved> |
| </transactionCoding> |
| | | <transactionTimeliness></transactionTimeliness> |
| | | <transactionAmounts> |
| <transactionShares> |
| <value> 10700.00 </value> |
| </transactionShares> |
| <transactionPricePerShare> |
| <footnoteId id="F2"/> |
| </transactionPricePerShare> |
| <transactionAcquiredDisposedCode> |
| <value> A </value> |
| </transactionAcquiredDisposedCode> |
| </transactionAmounts> |
| | | <exerciseDate> |
| <footnoteId id="F2"/> |
| </exerciseDate> |
| | | <expirationDate> |
| <footnoteId id="F2"/> |
| </expirationDate> |
| | | <underlyingSecurity> |
| <underlyingSecurityTitle> |
| <value> Common Stock </value> |
| </underlyingSecurityTitle> |
| <underlyingSecurityShares> |
| <value> 10700.00 </value> |
| </underlyingSecurityShares> |
| </underlyingSecurity> |
| | | <postTransactionAmounts> |
| <sharesOwnedFollowingTransaction> |
| <value> 23800.00 </value> |
| </sharesOwnedFollowingTransaction> |
| </postTransactionAmounts> |
| | | <ownershipNature> |
| <directOrIndirectOwnership> |
| <value> D </value> |
| </directOrIndirectOwnership> |
| </ownershipNature> |
| | | </derivativeTransaction> |
| | </derivativeTable> |
| <footnotes> |
| | <footnote id="F1"> Each DSU is the economic equivalent of one share of Ferro common stock. </footnote> |
| | <footnote id="F2"> Award granted to Non-Employee Directors. The Deferred Stock Units vest immediately at the time of the Award; however, the Deferred Stock Units will be held for the account of the Recipient and will not be converted into shares of Ferro Common Stock until the Recipient ceases to serve as a Director of the Company (the Holding Period). Upon cessation of Recipients service as a Director, one share of Ferro Common Stock will be delivered for each Deferred Stock Unit held. During the Holding Period, the Recipient will not be entitled to exercise any voting rights with respect to the shares of Ferro Common Stock that correspond to the Deferred Stock Units, but the Recipient will be entitled to receive a cash payment equivalent to any cash distributions or dividends paid on Ferro Common Stock with respect to the Deferred Stock Units during the Holding Period. </footnote> |
| | </footnotes> |
| <remarks></remarks> |
| <ownerSignature> |
| | <signatureName> /s/ Mark Duesenberg,Vice President, General Counsel & Secretary, by Power of Attorney </signatureName> |
| | <signatureDate> 2020-05-04 </signatureDate> |
| | </ownerSignature> |
| </ownershipDocument> |