<?xml version='1.0' encoding='utf-8'?>
<FilingSummary>
  <Version>3.22.0.1</Version>
  <ProcessingTime/>
  <ReportFormat>html</ReportFormat>
  <ContextCount>658</ContextCount>
  <ElementCount>529</ElementCount>
  <EntityCount>1</EntityCount>
  <FootnotesReported>true</FootnotesReported>
  <SegmentCount>335</SegmentCount>
  <ScenarioCount>0</ScenarioCount>
  <TuplesReported>false</TuplesReported>
  <UnitCount>5</UnitCount>
  <MyReports>
    <Report instance="sblk-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R1.htm</HtmlFileName>
      <LongName>00000001 - Document - Cover</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://starbulk.com/role/Cover</Role>
      <ShortName>Cover</ShortName>
      <MenuCategory>Cover</MenuCategory>
      <Position>1</Position>
    </Report>
    <Report instance="sblk-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R2.htm</HtmlFileName>
      <LongName>00000002 - Statement - Consolidated Balance Sheets</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://starbulk.com/role/BalanceSheets</Role>
      <ShortName>Consolidated Balance Sheets</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>2</Position>
    </Report>
    <Report instance="sblk-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R3.htm</HtmlFileName>
      <LongName>00000003 - Statement - Consolidated Balance Sheets (Parenthetical)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://starbulk.com/role/BalanceSheetsParenthetical</Role>
      <ShortName>Consolidated Balance Sheets (Parenthetical)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>3</Position>
    </Report>
    <Report instance="sblk-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R4.htm</HtmlFileName>
      <LongName>00000004 - Statement -  Consolidated Statements of Operations</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://starbulk.com/role/ConsolidatedStatementsOfOperations</Role>
      <ShortName>Consolidated Statements of Operations</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>4</Position>
    </Report>
    <Report instance="sblk-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R5.htm</HtmlFileName>
      <LongName>00000005 - Statement - Consolidated Statements of Comprehensive Income / (Loss)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://starbulk.com/role/StatementsOfComprehensiveIncomeLoss</Role>
      <ShortName>Consolidated Statements of Comprehensive Income / (Loss)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>5</Position>
    </Report>
    <Report instance="sblk-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R6.htm</HtmlFileName>
      <LongName>00000006 - Statement - Consolidated Statements of Stockholders' Equity</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://starbulk.com/role/StatementsOfStockholdersEquity</Role>
      <ShortName>Consolidated Statements of Stockholders' Equity</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>6</Position>
    </Report>
    <Report instance="sblk-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R7.htm</HtmlFileName>
      <LongName>00000007 - Statement - Consolidated Statements of Stockholders' Equity (Parenthetical)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://starbulk.com/role/StatementsOfStockholdersEquityParenthetical</Role>
      <ShortName>Consolidated Statements of Stockholders' Equity (Parenthetical)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>7</Position>
    </Report>
    <Report instance="sblk-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R8.htm</HtmlFileName>
      <LongName>00000008 - Statement - Consolidated Statements of Cash Flows</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://starbulk.com/role/StatementsOfCashFlows</Role>
      <ShortName>Consolidated Statements of Cash Flows</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>8</Position>
    </Report>
    <Report instance="sblk-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R9.htm</HtmlFileName>
      <LongName>00000009 - Disclosure - Basis of Presentation and General Information</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://starbulk.com/role/BasisOfPresentationAndGeneralInformation</Role>
      <ShortName>Basis of Presentation and General Information</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>9</Position>
    </Report>
    <Report instance="sblk-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R10.htm</HtmlFileName>
      <LongName>00000010 - Disclosure - Significant Accounting policies</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://starbulk.com/role/SignificantAccountingPolicies</Role>
      <ShortName>Significant Accounting policies</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>10</Position>
    </Report>
    <Report instance="sblk-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R11.htm</HtmlFileName>
      <LongName>00000011 - Disclosure - Transactions with Related Parties</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://starbulk.com/role/TransactionsWithRelatedParties</Role>
      <ShortName>Transactions with Related Parties</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>11</Position>
    </Report>
    <Report instance="sblk-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R12.htm</HtmlFileName>
      <LongName>00000012 - Disclosure - Inventories</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://starbulk.com/role/Inventories</Role>
      <ShortName>Inventories</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>12</Position>
    </Report>
    <Report instance="sblk-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R13.htm</HtmlFileName>
      <LongName>00000013 - Disclosure - Vessels and other fixed assets, net</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://starbulk.com/role/VesselsAndOtherFixedAssetsNet</Role>
      <ShortName>Vessels and other fixed assets, net</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>13</Position>
    </Report>
    <Report instance="sblk-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R14.htm</HtmlFileName>
      <LongName>00000014 - Disclosure - Lease financing</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://starbulk.com/role/LeaseFinancing</Role>
      <ShortName>Lease financing</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>14</Position>
    </Report>
    <Report instance="sblk-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R15.htm</HtmlFileName>
      <LongName>00000015 - Disclosure - Long-term bank loans</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://starbulk.com/role/Long-termBankLoans</Role>
      <ShortName>Long-term bank loans</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>15</Position>
    </Report>
    <Report instance="sblk-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R16.htm</HtmlFileName>
      <LongName>00000016 - Disclosure - Preferred, Common Shares and Additional paid in capital</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://starbulk.com/role/PreferredCommonSharesAndAdditionalPaidInCapital</Role>
      <ShortName>Preferred, Common Shares and Additional paid in capital</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>16</Position>
    </Report>
    <Report instance="sblk-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R17.htm</HtmlFileName>
      <LongName>00000017 - Disclosure - Management fees</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://starbulk.com/role/ManagementFees</Role>
      <ShortName>Management fees</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>17</Position>
    </Report>
    <Report instance="sblk-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R18.htm</HtmlFileName>
      <LongName>00000018 - Disclosure - Equity Incentive Plans</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://starbulk.com/role/EquityIncentivePlans</Role>
      <ShortName>Equity Incentive Plans</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>18</Position>
    </Report>
    <Report instance="sblk-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R19.htm</HtmlFileName>
      <LongName>00000019 - Disclosure - Earnings / (Loss) per share</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://starbulk.com/role/EarningsLossPerShare</Role>
      <ShortName>Earnings / (Loss) per share</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>19</Position>
    </Report>
    <Report instance="sblk-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R20.htm</HtmlFileName>
      <LongName>00000020 - Disclosure - Accrued liabilities</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://starbulk.com/role/AccruedLiabilities</Role>
      <ShortName>Accrued liabilities</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>20</Position>
    </Report>
    <Report instance="sblk-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R21.htm</HtmlFileName>
      <LongName>00000021 - Disclosure - Income taxes</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://starbulk.com/role/IncomeTaxes</Role>
      <ShortName>Income taxes</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>21</Position>
    </Report>
    <Report instance="sblk-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R22.htm</HtmlFileName>
      <LongName>00000022 - Disclosure - Commitments and Contingencies</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://starbulk.com/role/CommitmentsAndContingencies</Role>
      <ShortName>Commitments and Contingencies</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>22</Position>
    </Report>
    <Report instance="sblk-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R23.htm</HtmlFileName>
      <LongName>00000023 - Disclosure - Voyage revenues</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://starbulk.com/role/VoyageRevenues</Role>
      <ShortName>Voyage revenues</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>23</Position>
    </Report>
    <Report instance="sblk-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R24.htm</HtmlFileName>
      <LongName>00000024 - Disclosure - Voyage and Vessel operating expenses</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://starbulk.com/role/VoyageAndVesselOperatingExpenses</Role>
      <ShortName>Voyage and Vessel operating expenses</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>24</Position>
    </Report>
    <Report instance="sblk-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R25.htm</HtmlFileName>
      <LongName>00000025 - Disclosure - Fair Value Measurements and Hedging</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://starbulk.com/role/FairValueMeasurementsAndHedging</Role>
      <ShortName>Fair Value Measurements and Hedging</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>25</Position>
    </Report>
    <Report instance="sblk-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R26.htm</HtmlFileName>
      <LongName>00000026 - Disclosure - Subsequent Events</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://starbulk.com/role/SubsequentEvents</Role>
      <ShortName>Subsequent Events</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>26</Position>
    </Report>
    <Report instance="sblk-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R27.htm</HtmlFileName>
      <LongName>00000027 - Disclosure - Significant Accounting policies (Policies)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://starbulk.com/role/SignificantAccountingPoliciesPolicies</Role>
      <ShortName>Significant Accounting policies (Policies)</ShortName>
      <MenuCategory>Policies</MenuCategory>
      <ParentRole>http://starbulk.com/role/SignificantAccountingPolicies</ParentRole>
      <Position>27</Position>
    </Report>
    <Report instance="sblk-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R28.htm</HtmlFileName>
      <LongName>00000028 - Disclosure - Basis of Presentation and General Information (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://starbulk.com/role/BasisOfPresentationAndGeneralInformationTables</Role>
      <ShortName>Basis of Presentation and General Information (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://starbulk.com/role/BasisOfPresentationAndGeneralInformation</ParentRole>
      <Position>28</Position>
    </Report>
    <Report instance="sblk-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R29.htm</HtmlFileName>
      <LongName>00000029 - Disclosure - Significant Accounting policies (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://starbulk.com/role/SignificantAccountingPoliciesTables</Role>
      <ShortName>Significant Accounting policies (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://starbulk.com/role/SignificantAccountingPolicies</ParentRole>
      <Position>29</Position>
    </Report>
    <Report instance="sblk-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R30.htm</HtmlFileName>
      <LongName>00000030 - Disclosure - Transactions with Related Parties (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://starbulk.com/role/TransactionsWithRelatedPartiesTables</Role>
      <ShortName>Transactions with Related Parties (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://starbulk.com/role/TransactionsWithRelatedParties</ParentRole>
      <Position>30</Position>
    </Report>
    <Report instance="sblk-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R31.htm</HtmlFileName>
      <LongName>00000031 - Disclosure - Inventories (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://starbulk.com/role/InventoriesTables</Role>
      <ShortName>Inventories (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://starbulk.com/role/Inventories</ParentRole>
      <Position>31</Position>
    </Report>
    <Report instance="sblk-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R32.htm</HtmlFileName>
      <LongName>00000032 - Disclosure - Vessels and other fixed assets, net (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://starbulk.com/role/VesselsAndOtherFixedAssetsNetTables</Role>
      <ShortName>Vessels and other fixed assets, net (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://starbulk.com/role/VesselsAndOtherFixedAssetsNet</ParentRole>
      <Position>32</Position>
    </Report>
    <Report instance="sblk-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R33.htm</HtmlFileName>
      <LongName>00000033 - Disclosure - Lease financing (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://starbulk.com/role/LeaseFinancingTables</Role>
      <ShortName>Lease financing (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://starbulk.com/role/LeaseFinancing</ParentRole>
      <Position>33</Position>
    </Report>
    <Report instance="sblk-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R34.htm</HtmlFileName>
      <LongName>00000034 - Disclosure - Long-term bank loans (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://starbulk.com/role/Long-termBankLoansTables</Role>
      <ShortName>Long-term bank loans (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://starbulk.com/role/Long-termBankLoans</ParentRole>
      <Position>34</Position>
    </Report>
    <Report instance="sblk-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R35.htm</HtmlFileName>
      <LongName>00000035 - Disclosure - Equity Incentive Plans (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://starbulk.com/role/EquityIncentivePlansTables</Role>
      <ShortName>Equity Incentive Plans (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://starbulk.com/role/EquityIncentivePlans</ParentRole>
      <Position>35</Position>
    </Report>
    <Report instance="sblk-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R36.htm</HtmlFileName>
      <LongName>00000036 - Disclosure - Earnings / (Loss) per share (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://starbulk.com/role/EarningsLossPerShareTables</Role>
      <ShortName>Earnings / (Loss) per share (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://starbulk.com/role/EarningsLossPerShare</ParentRole>
      <Position>36</Position>
    </Report>
    <Report instance="sblk-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R37.htm</HtmlFileName>
      <LongName>00000037 - Disclosure - Accrued liabilities (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://starbulk.com/role/AccruedLiabilitiesTables</Role>
      <ShortName>Accrued liabilities (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://starbulk.com/role/AccruedLiabilities</ParentRole>
      <Position>37</Position>
    </Report>
    <Report instance="sblk-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R38.htm</HtmlFileName>
      <LongName>00000038 - Disclosure - Commitments and Contingencies (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://starbulk.com/role/CommitmentsAndContingenciesTables</Role>
      <ShortName>Commitments and Contingencies (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://starbulk.com/role/CommitmentsAndContingencies</ParentRole>
      <Position>38</Position>
    </Report>
    <Report instance="sblk-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R39.htm</HtmlFileName>
      <LongName>00000039 - Disclosure - Voyage revenues (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://starbulk.com/role/VoyageRevenuesTables</Role>
      <ShortName>Voyage revenues (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://starbulk.com/role/VoyageRevenues</ParentRole>
      <Position>39</Position>
    </Report>
    <Report instance="sblk-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R40.htm</HtmlFileName>
      <LongName>00000040 - Disclosure - Voyage and Vessel operating expenses (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://starbulk.com/role/VoyageAndVesselOperatingExpensesTables</Role>
      <ShortName>Voyage and Vessel operating expenses (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://starbulk.com/role/VoyageAndVesselOperatingExpenses</ParentRole>
      <Position>40</Position>
    </Report>
    <Report instance="sblk-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R41.htm</HtmlFileName>
      <LongName>00000041 - Disclosure - Fair Value Measurements and Hedging (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://starbulk.com/role/FairValueMeasurementsAndHedgingTables</Role>
      <ShortName>Fair Value Measurements and Hedging (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://starbulk.com/role/FairValueMeasurementsAndHedging</ParentRole>
      <Position>41</Position>
    </Report>
    <Report instance="sblk-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R42.htm</HtmlFileName>
      <LongName>00000042 - Disclosure - Basis of Presentation and General information - List of subsidiaries (Table) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://starbulk.com/role/BasisOfPresentationAndGeneralInformation-ListOfSubsidiariesTableDetails</Role>
      <ShortName>Basis of Presentation and General information - List of subsidiaries (Table) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>42</Position>
    </Report>
    <Report instance="sblk-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R43.htm</HtmlFileName>
      <LongName>00000043 - Disclosure - Basis of Presentation and General Information - Charter Revenue Percentage (Table) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://starbulk.com/role/BasisOfPresentationAndGeneralInformation-CharterRevenuePercentageTableDetails</Role>
      <ShortName>Basis of Presentation and General Information - Charter Revenue Percentage (Table) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>43</Position>
    </Report>
    <Report instance="sblk-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R44.htm</HtmlFileName>
      <LongName>00000044 - Disclosure - Basis of Presentation and General Information (Details Narrative)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://starbulk.com/role/BasisOfPresentationAndGeneralInformationDetailsNarrative</Role>
      <ShortName>Basis of Presentation and General Information (Details Narrative)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://starbulk.com/role/BasisOfPresentationAndGeneralInformationTables</ParentRole>
      <Position>44</Position>
    </Report>
    <Report instance="sblk-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R45.htm</HtmlFileName>
      <LongName>00000045 - Disclosure - Significant Accounting policies - Operating Lease, Time Charter- in Payments (Table) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://starbulk.com/role/SignificantAccountingPolicies-OperatingLeaseTimeCharter-InPaymentsTableDetails</Role>
      <ShortName>Significant Accounting policies - Operating Lease, Time Charter- in Payments (Table) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>45</Position>
    </Report>
    <Report instance="sblk-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R46.htm</HtmlFileName>
      <LongName>00000046 - Disclosure - Significant Accounting policies - Operating Lease, Payments for office rental (Table) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://starbulk.com/role/SignificantAccountingPolicies-OperatingLeasePaymentsForOfficeRentalTableDetails</Role>
      <ShortName>Significant Accounting policies - Operating Lease, Payments for office rental (Table) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>46</Position>
    </Report>
    <Report instance="sblk-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R47.htm</HtmlFileName>
      <LongName>00000047 - Disclosure - Significant Accounting policies (Details Narrative)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://starbulk.com/role/SignificantAccountingPoliciesDetailsNarrative</Role>
      <ShortName>Significant Accounting policies (Details Narrative)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://starbulk.com/role/SignificantAccountingPoliciesTables</ParentRole>
      <Position>47</Position>
    </Report>
    <Report instance="sblk-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R48.htm</HtmlFileName>
      <LongName>00000048 - Disclosure - Transactions with Related Parties - Balance Sheets (Table) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://starbulk.com/role/TransactionsWithRelatedParties-BalanceSheetsTableDetails</Role>
      <ShortName>Transactions with Related Parties - Balance Sheets (Table) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>48</Position>
    </Report>
    <Report instance="sblk-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R49.htm</HtmlFileName>
      <LongName>00000049 - Disclosure - Transactions with Related Parties - Statements of Operations (Table) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://starbulk.com/role/TransactionsWithRelatedParties-StatementsOfOperationsTableDetails</Role>
      <ShortName>Transactions with Related Parties - Statements of Operations (Table) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>49</Position>
    </Report>
    <Report instance="sblk-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R50.htm</HtmlFileName>
      <LongName>00000050 - Disclosure - Transactions with Related Parties (Details Narrative)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://starbulk.com/role/TransactionsWithRelatedPartiesDetailsNarrative</Role>
      <ShortName>Transactions with Related Parties (Details Narrative)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://starbulk.com/role/TransactionsWithRelatedPartiesTables</ParentRole>
      <Position>50</Position>
    </Report>
    <Report instance="sblk-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R51.htm</HtmlFileName>
      <LongName>00000051 - Disclosure - Inventories (Table) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://starbulk.com/role/InventoriesTableDetails</Role>
      <ShortName>Inventories (Table) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://starbulk.com/role/InventoriesTables</ParentRole>
      <Position>51</Position>
    </Report>
    <Report instance="sblk-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R52.htm</HtmlFileName>
      <LongName>00000052 - Disclosure - Vessels and other fixed assets net - Schedules of vessels and other fixed assets, net (Table) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://starbulk.com/role/VesselsAndOtherFixedAssetsNet-SchedulesOfVesselsAndOtherFixedAssetsNetTableDetails</Role>
      <ShortName>Vessels and other fixed assets net - Schedules of vessels and other fixed assets, net (Table) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>52</Position>
    </Report>
    <Report instance="sblk-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R53.htm</HtmlFileName>
      <LongName>00000053 - Disclosure - Vessels and other fixed assets, net (Details Narrative)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://starbulk.com/role/VesselsAndOtherFixedAssetsNetDetailsNarrative</Role>
      <ShortName>Vessels and other fixed assets, net (Details Narrative)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://starbulk.com/role/VesselsAndOtherFixedAssetsNetTables</ParentRole>
      <Position>53</Position>
    </Report>
    <Report instance="sblk-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R54.htm</HtmlFileName>
      <LongName>00000054 - Disclosure - Lease financing - Capital lease obligations, Principal payments (Table) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://starbulk.com/role/LeaseFinancing-CapitalLeaseObligationsPrincipalPaymentsTableDetails</Role>
      <ShortName>Lease financing - Capital lease obligations, Principal payments (Table) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>54</Position>
    </Report>
    <Report instance="sblk-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R55.htm</HtmlFileName>
      <LongName>00000055 - Disclosure - Lease financing (Details Narrative)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://starbulk.com/role/LeaseFinancingDetailsNarrative</Role>
      <ShortName>Lease financing (Details Narrative)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://starbulk.com/role/LeaseFinancingTables</ParentRole>
      <Position>55</Position>
    </Report>
    <Report instance="sblk-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R56.htm</HtmlFileName>
      <LongName>00000056 - Disclosure - Long-term bank loans - Principal repayments (Table) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://starbulk.com/role/Long-termBankLoans-PrincipalRepaymentsTableDetails</Role>
      <ShortName>Long-term bank loans - Principal repayments (Table) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>56</Position>
    </Report>
    <Report instance="sblk-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R57.htm</HtmlFileName>
      <LongName>00000057 - Disclosure - Long-term bank loans - Interest and finance costs (Table) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://starbulk.com/role/Long-termBankLoans-InterestAndFinanceCostsTableDetails</Role>
      <ShortName>Long-term bank loans - Interest and finance costs (Table) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>57</Position>
    </Report>
    <Report instance="sblk-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R58.htm</HtmlFileName>
      <LongName>00000058 - Disclosure - Long-term bank loans (Details Narrative)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://starbulk.com/role/Long-termBankLoansDetailsNarrative</Role>
      <ShortName>Long-term bank loans (Details Narrative)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://starbulk.com/role/Long-termBankLoansTables</ParentRole>
      <Position>58</Position>
    </Report>
    <Report instance="sblk-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R59.htm</HtmlFileName>
      <LongName>00000059 - Disclosure - Preferred, Common Shares and Additional paid in capital (Details Narrative)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://starbulk.com/role/PreferredCommonSharesAndAdditionalPaidInCapitalDetailsNarrative</Role>
      <ShortName>Preferred, Common Shares and Additional paid in capital (Details Narrative)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://starbulk.com/role/PreferredCommonSharesAndAdditionalPaidInCapital</ParentRole>
      <Position>59</Position>
    </Report>
    <Report instance="sblk-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R60.htm</HtmlFileName>
      <LongName>00000060 - Disclosure - Management fees (Details Narrative)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://starbulk.com/role/ManagementFeesDetailsNarrative</Role>
      <ShortName>Management fees (Details Narrative)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://starbulk.com/role/ManagementFees</ParentRole>
      <Position>60</Position>
    </Report>
    <Report instance="sblk-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R61.htm</HtmlFileName>
      <LongName>00000061 - Disclosure - Equity Incentive Plans - Summary of non-vested restricted share options (Table) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://starbulk.com/role/EquityIncentivePlans-SummaryOfNon-vestedRestrictedShareOptionsTableDetails</Role>
      <ShortName>Equity Incentive Plans - Summary of non-vested restricted share options (Table) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>61</Position>
    </Report>
    <Report instance="sblk-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R62.htm</HtmlFileName>
      <LongName>00000062 - Disclosure - Equity Incentive Plans - Summary of non-vested share options (Table) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://starbulk.com/role/EquityIncentivePlans-SummaryOfNon-vestedShareOptionsTableDetails</Role>
      <ShortName>Equity Incentive Plans - Summary of non-vested share options (Table) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>62</Position>
    </Report>
    <Report instance="sblk-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R63.htm</HtmlFileName>
      <LongName>00000063 - Disclosure - Equity Incentive Plans (Details Narrative)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://starbulk.com/role/EquityIncentivePlansDetailsNarrative</Role>
      <ShortName>Equity Incentive Plans (Details Narrative)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://starbulk.com/role/EquityIncentivePlansTables</ParentRole>
      <Position>63</Position>
    </Report>
    <Report instance="sblk-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R64.htm</HtmlFileName>
      <LongName>00000064 - Disclosure - Earnings / (Loss) per share (Table) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://starbulk.com/role/EarningsLossPerShareTableDetails</Role>
      <ShortName>Earnings / (Loss) per share (Table) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://starbulk.com/role/EarningsLossPerShareTables</ParentRole>
      <Position>64</Position>
    </Report>
    <Report instance="sblk-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R65.htm</HtmlFileName>
      <LongName>00000065 - Disclosure - Earnings / (Loss) per share (Details Narrative)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://starbulk.com/role/EarningsLossPerShareDetailsNarrative</Role>
      <ShortName>Earnings / (Loss) per share (Details Narrative)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://starbulk.com/role/EarningsLossPerShareTables</ParentRole>
      <Position>65</Position>
    </Report>
    <Report instance="sblk-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R66.htm</HtmlFileName>
      <LongName>00000066 - Disclosure - Accrued liabilities (Table) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://starbulk.com/role/AccruedLiabilitiesTableDetails</Role>
      <ShortName>Accrued liabilities (Table) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://starbulk.com/role/AccruedLiabilitiesTables</ParentRole>
      <Position>66</Position>
    </Report>
    <Report instance="sblk-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R67.htm</HtmlFileName>
      <LongName>00000067 - Disclosure - Income taxes (Details Narrative)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://starbulk.com/role/IncomeTaxesDetailsNarrative</Role>
      <ShortName>Income taxes (Details Narrative)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://starbulk.com/role/IncomeTaxes</ParentRole>
      <Position>67</Position>
    </Report>
    <Report instance="sblk-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R68.htm</HtmlFileName>
      <LongName>00000068 - Disclosure - Commitments and Contingencies - Charter party arrangements (Table) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://starbulk.com/role/CommitmentsAndContingencies-CharterPartyArrangementsTableDetails</Role>
      <ShortName>Commitments and Contingencies - Charter party arrangements (Table) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>68</Position>
    </Report>
    <Report instance="sblk-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R69.htm</HtmlFileName>
      <LongName>00000069 - Disclosure - Commitments and Contingencies - Other commitments (Table) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://starbulk.com/role/CommitmentsAndContingencies-OtherCommitmentsTableDetails</Role>
      <ShortName>Commitments and Contingencies - Other commitments (Table) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>69</Position>
    </Report>
    <Report instance="sblk-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R70.htm</HtmlFileName>
      <LongName>00000070 - Disclosure - Voyage revenues (Table) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://starbulk.com/role/VoyageRevenuesTableDetails</Role>
      <ShortName>Voyage revenues (Table) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://starbulk.com/role/VoyageRevenuesTables</ParentRole>
      <Position>70</Position>
    </Report>
    <Report instance="sblk-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R71.htm</HtmlFileName>
      <LongName>00000071 - Disclosure - Voyage revenues (Details Narrative)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://starbulk.com/role/VoyageRevenuesDetailsNarrative</Role>
      <ShortName>Voyage revenues (Details Narrative)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://starbulk.com/role/VoyageRevenuesTables</ParentRole>
      <Position>71</Position>
    </Report>
    <Report instance="sblk-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R72.htm</HtmlFileName>
      <LongName>00000072 - Disclosure - Voyage and Vessel operating expenses - Voyage expenses (Table) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://starbulk.com/role/VoyageAndVesselOperatingExpenses-VoyageExpensesTableDetails</Role>
      <ShortName>Voyage and Vessel operating expenses - Voyage expenses (Table) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>72</Position>
    </Report>
    <Report instance="sblk-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R73.htm</HtmlFileName>
      <LongName>00000073 - Disclosure - Voyage and Vessel operating expenses - Vessel operating expenses (Table) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://starbulk.com/role/VoyageAndVesselOperatingExpenses-VesselOperatingExpensesTableDetails</Role>
      <ShortName>Voyage and Vessel operating expenses - Vessel operating expenses (Table) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>73</Position>
    </Report>
    <Report instance="sblk-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R74.htm</HtmlFileName>
      <LongName>00000074 - Disclosure - Fair Value Measurements and Hedging - Schedule of Derivative Instrument (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://starbulk.com/role/FairValueMeasurementsAndHedging-ScheduleOfDerivativeInstrumentDetails</Role>
      <ShortName>Fair Value Measurements and Hedging - Schedule of Derivative Instrument (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>74</Position>
    </Report>
    <Report instance="sblk-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R75.htm</HtmlFileName>
      <LongName>00000075 - Disclosure - Fair Value Measurements and Hedging - Derivative instruments effect on statement of operations (Table) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://starbulk.com/role/FairValueMeasurementsAndHedging-DerivativeInstrumentsEffectOnStatementOfOperationsTableDetails</Role>
      <ShortName>Fair Value Measurements and Hedging - Derivative instruments effect on statement of operations (Table) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>75</Position>
    </Report>
    <Report instance="sblk-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R76.htm</HtmlFileName>
      <LongName>00000076 - Disclosure - Fair Value Measurements and Hedging - Fair value on a recurring basis - Quoted Prices in Active Markets (Table) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://starbulk.com/role/FairValueMeasurementsAndHedging-FairValueOnRecurringBasis-QuotedPricesInActiveMarketsTableDetails</Role>
      <ShortName>Fair Value Measurements and Hedging - Fair value on a recurring basis - Quoted Prices in Active Markets (Table) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>76</Position>
    </Report>
    <Report instance="sblk-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R77.htm</HtmlFileName>
      <LongName>00000077 - Disclosure - Fair Value Measurements and Hedging - Fair value on a recurring basis - Significant Other Observable Inputs (Table) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://starbulk.com/role/FairValueMeasurementsAndHedging-FairValueOnRecurringBasis-SignificantOtherObservableInputsTableDetails</Role>
      <ShortName>Fair Value Measurements and Hedging - Fair value on a recurring basis - Significant Other Observable Inputs (Table) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>77</Position>
    </Report>
    <Report instance="sblk-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R78.htm</HtmlFileName>
      <LongName>00000078 - Disclosure - Fair Value Measurements and Hedging - Fair value measurements on a nonrecurring basis (Table) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://starbulk.com/role/FairValueMeasurementsAndHedging-FairValueMeasurementsOnNonrecurringBasisTableDetails</Role>
      <ShortName>Fair Value Measurements and Hedging - Fair value measurements on a nonrecurring basis (Table) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>78</Position>
    </Report>
    <Report instance="sblk-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R79.htm</HtmlFileName>
      <LongName>00000079 - Disclosure - Fair Value Measurements and Hedging (Details Narrative)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://starbulk.com/role/FairValueMeasurementsAndHedgingDetailsNarrative</Role>
      <ShortName>Fair Value Measurements and Hedging (Details Narrative)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://starbulk.com/role/FairValueMeasurementsAndHedgingTables</ParentRole>
      <Position>79</Position>
    </Report>
    <Report instance="sblk-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R80.htm</HtmlFileName>
      <LongName>00000080 - Disclosure - Subsequent Events (Details Narrative)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://starbulk.com/role/SubsequentEventsDetailsNarrative</Role>
      <ShortName>Subsequent Events (Details Narrative)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://starbulk.com/role/SubsequentEvents</ParentRole>
      <Position>80</Position>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <LongName>All Reports</LongName>
      <ReportType>Book</ReportType>
      <ShortName>All Reports</ShortName>
    </Report>
  </MyReports>
  <InputFiles>
    <File doctype="20-F" original="sblk-20211231.htm">sblk-20211231.htm</File>
    <File>exhibit121.htm</File>
    <File>exhibit122.htm</File>
    <File>exhibit131.htm</File>
    <File>exhibit132.htm</File>
    <File>exhibit152.htm</File>
    <File>exhibit49.htm</File>
    <File>exhibit81.htm</File>
    <File>sblk-20211231.xsd</File>
    <File>sblk-20211231_cal.xml</File>
    <File>sblk-20211231_def.xml</File>
    <File>sblk-20211231_lab.xml</File>
    <File>sblk-20211231_pre.xml</File>
  </InputFiles>
  <SupplementalFiles/>
  <BaseTaxonomies>
    <BaseTaxonomy items="1">http://fasb.org/srt/2021-01-31</BaseTaxonomy>
    <BaseTaxonomy items="1220">http://fasb.org/us-gaap/2021-01-31</BaseTaxonomy>
    <BaseTaxonomy items="42">http://xbrl.sec.gov/dei/2021q4</BaseTaxonomy>
  </BaseTaxonomies>
  <HasPresentationLinkbase>true</HasPresentationLinkbase>
  <HasCalculationLinkbase>true</HasCalculationLinkbase>
</FilingSummary>
