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

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2017-07-20</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001421461</issuerCik>
        <issuerName>Intrepid Potash, Inc.</issuerName>
        <issuerTradingSymbol>IPI</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001701904</rptOwnerCik>
            <rptOwnerName>Clearway Capital Management Ltd.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>WINTERBOTHAM PLACE MARLBOROUGH &amp;</rptOwnerStreet1>
            <rptOwnerStreet2>QUEEN STREETS P.O. BOX N-3026</rptOwnerStreet2>
            <rptOwnerCity>NASSAU</rptOwnerCity>
            <rptOwnerState>C5</rptOwnerState>
            <rptOwnerZipCode></rptOwnerZipCode>
            <rptOwnerStateDescription>BAHAMAS</rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001712802</rptOwnerCik>
            <rptOwnerName>Saratoga Asset Management S.A.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>2ND FLOOR HUMBOLDT TOWER 53 EAST</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>PANAMA CITY</rptOwnerCity>
            <rptOwnerState>R1</rptOwnerState>
            <rptOwnerZipCode></rptOwnerZipCode>
            <rptOwnerStateDescription>PANAMA</rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2017-07-20</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>P</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>54907</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>2.8308</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>13754217</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>By Saratoga Asset Management, S.A.</value>
                    <footnoteId id="F1"/>
                    <footnoteId id="F2"/>
                    <footnoteId id="F3"/>
                    <footnoteId id="F4"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2017-07-21</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>P</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>245093</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>2.8316</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>13999310</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>By Saratoga Asset Management, S.A.</value>
                    <footnoteId id="F1"/>
                    <footnoteId id="F2"/>
                    <footnoteId id="F3"/>
                    <footnoteId id="F4"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">The total Common Stock shares are held directly by Saratoga Asset Management S.A., a wholly-owned subsidiary of Clearway Capital Management Ltd. Saratoga Asset Management S.A. acquired the total Common Stock shares through regular open-market transactions.</footnote>
        <footnote id="F2">This Form 4 is jointly filed by and on behalf of each of Clearway Capital Management Ltd. and Saratoga Asset Management S.A. under Exchange Act Rule 16a-3. Clearway Capital Management Ltd. is an Investment Fund organized and doing business under the laws of The Bahamas which wholly-owns Saratoga Asset Management S.A. which directly holds all of the Common Stock Shares of the Issuer being reported in this Form 4.</footnote>
        <footnote id="F3">Each of Clearway Capital Management Ltd. and Saratoga Asset Management S.A. disclaim the creation of any group by the filing of this Form 4.</footnote>
        <footnote id="F4">Each of Clearway Capital Management Ltd. and Saratoga Asset Management S.A. disclaim beneficial ownership of the securities indicated, and the reporting herein of such securities, shall not be construed as an admission that either of the undersigned is the beneficial owner thereof for purposes of Section 16 or for any other purpose.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ Gonzalo Maria Avendano, Director, Clearway Capital Management Ltd.</signatureName>
        <signatureDate>2017-07-24</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>/s/ Gonzalo Maria Avendano, Authorized Signatory, Saratoga Asset Management S.A.</signatureName>
        <signatureDate>2017-07-24</signatureDate>
    </ownerSignature>
</ownershipDocument>
