<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2014-03-17</periodOfReport>

    <issuer>
        <issuerCik>0000729237</issuerCik>
        <issuerName>PARKWAY PROPERTIES INC</issuerName>
        <issuerTradingSymbol>PKY</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001557945</rptOwnerCik>
            <rptOwnerName>Dorsett Jeremy R</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>390 NORTH ORANGE AVENUE</rptOwnerStreet1>
            <rptOwnerStreet2>SUITE 2400</rptOwnerStreet2>
            <rptOwnerCity>ORLANDO</rptOwnerCity>
            <rptOwnerState>FL</rptOwnerState>
            <rptOwnerZipCode>32801</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>EVP &amp; GENERAL COUNSEL</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2014-03-17</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>11200</value>
                    <footnoteId id="F1"/>
                </transactionShares>
                <transactionPricePerShare>
                    <footnoteId id="F1"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>44973</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value></value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>LTIP Units</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <footnoteId id="F2"/>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2014-03-17</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>16800</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 OP Units</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>16800</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>16800</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value></value>
                </natureOfOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">Represents time-based RSU awards that will vest 25% on each of the first, second, third and fourth anniversaries of the grant date, subject to the executive's continued employment with the Company.</footnote>
        <footnote id="F2">Represents performance-based LTIP units that will vest based on the attainment of targets for total return to stockholders during the performance period running from March 17, 2014 to March 16, 2017, subject to the executive's continued employment with the Company. Subject to the satisfaction of the vesting requirements and certain restrictions set forth in the limited partnership agreement of Parkway Properties LP, each LTIP unit may be converted, at the election of the executive or the Company, into an OP unit. Each OP unit acquired upon conversion of an LTIP unit may be redeemed, at the election of the executive, for cash equal to the then fair market value of a share of common stock, except that the Company may, at its election, acquire each OP unit so presented for redemption for one share of common stock.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/Jeremy Dorsett</signatureName>
        <signatureDate>2014-03-19</signatureDate>
    </ownerSignature>
</ownershipDocument>
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X0306
4
2014-03-17
0000729237
PARKWAY PROPERTIES INC
PKY
0001557945
Dorsett Jeremy R
390 NORTH ORANGE AVENUE
SUITE 2400
ORLANDO
FL
32801
0
1
0
0
EVP & GENERAL COUNSEL
Common Stock
2014-03-17
4
A
0
11200
A
44973
D
LTIP Units
2014-03-17
4
A
0
16800
A
Common OP Units
16800
16800
D
Represents time-based RSU awards that will vest 25% on each of the first, second, third and fourth anniversaries of the grant date, subject to the executive's continued employment with the Company.
Represents performance-based LTIP units that will vest based on the attainment of targets for total return to stockholders during the performance period running from March 17, 2014 to March 16, 2017, subject to the executive's continued employment with the Company. Subject to the satisfaction of the vesting requirements and certain restrictions set forth in the limited partnership agreement of Parkway Properties LP, each LTIP unit may be converted, at the election of the executive or the Company, into an OP unit. Each OP unit acquired upon conversion of an LTIP unit may be redeemed, at the election of the executive, for cash equal to the then fair market value of a share of common stock, except that the Company may, at its election, acquire each OP unit so presented for redemption for one share of common stock.
/s/Jeremy Dorsett
2014-03-19