<?xml version='1.0' encoding='utf-8'?>
<FilingSummary>
  <Version>3.19.1</Version>
  <ProcessingTime/>
  <ReportFormat>html</ReportFormat>
  <ContextCount>79</ContextCount>
  <ElementCount>211</ElementCount>
  <EntityCount>1</EntityCount>
  <FootnotesReported>false</FootnotesReported>
  <SegmentCount>19</SegmentCount>
  <ScenarioCount>0</ScenarioCount>
  <TuplesReported>false</TuplesReported>
  <UnitCount>4</UnitCount>
  <MyReports>
    <Report instance="olbg-20190331.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R1.htm</HtmlFileName>
      <LongName>00000001 - Document - Document and Entity Information</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://olb.com/role/DocumentAndEntityInformation</Role>
      <ShortName>Document and Entity Information</ShortName>
      <MenuCategory>Cover</MenuCategory>
      <Position>1</Position>
    </Report>
    <Report instance="olbg-20190331.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R2.htm</HtmlFileName>
      <LongName>00000002 - Statement - Condensed??Consolidated Balance Sheets</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://olb.com/role/CondensedconsolidatedBalanceSheets</Role>
      <ShortName>Condensed??Consolidated Balance Sheets</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>2</Position>
    </Report>
    <Report instance="olbg-20190331.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R3.htm</HtmlFileName>
      <LongName>00000003 - Statement - Condensed??Consolidated Balance Sheets (Parenthetical)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://olb.com/role/CondensedconsolidatedBalanceSheetsParenthetical</Role>
      <ShortName>Condensed??Consolidated Balance Sheets (Parenthetical)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>3</Position>
    </Report>
    <Report instance="olbg-20190331.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R4.htm</HtmlFileName>
      <LongName>00000004 - Statement - Condensed Consolidated Statements of Operations (Unaudited)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://olb.com/role/StatementsOfOperations</Role>
      <ShortName>Condensed Consolidated Statements of Operations (Unaudited)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>4</Position>
    </Report>
    <Report instance="olbg-20190331.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R5.htm</HtmlFileName>
      <LongName>00000005 - Statement - Condensed Consolidated Statements of Stockholders' Deficit</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://olb.com/role/StatementsOfStockholdersDeficit</Role>
      <ShortName>Condensed Consolidated Statements of Stockholders' Deficit</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>5</Position>
    </Report>
    <Report instance="olbg-20190331.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R6.htm</HtmlFileName>
      <LongName>00000006 - Statement - Condensed Consolidated Statements of Cash Flows (Unaudited)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://olb.com/role/CondensedStatementsOfCashFlows</Role>
      <ShortName>Condensed Consolidated Statements of Cash Flows (Unaudited)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>6</Position>
    </Report>
    <Report instance="olbg-20190331.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R7.htm</HtmlFileName>
      <LongName>00000007 - Disclosure - Background</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://olb.com/role/Background</Role>
      <ShortName>Background</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>7</Position>
    </Report>
    <Report instance="olbg-20190331.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R8.htm</HtmlFileName>
      <LongName>00000008 - Disclosure - Summary of Significant Accounting Policies</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://olb.com/role/SummaryOfSignificantAccountingPolicies</Role>
      <ShortName>Summary of Significant Accounting Policies</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>8</Position>
    </Report>
    <Report instance="olbg-20190331.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R9.htm</HtmlFileName>
      <LongName>00000009 - Disclosure - Liquidity and Capital Resources</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://olb.com/role/LiquidityAndCapitalResources</Role>
      <ShortName>Liquidity and Capital Resources</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>9</Position>
    </Report>
    <Report instance="olbg-20190331.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R10.htm</HtmlFileName>
      <LongName>00000010 - Disclosure - Intangible Assets</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://olb.com/role/IntangibleAssets</Role>
      <ShortName>Intangible Assets</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>10</Position>
    </Report>
    <Report instance="olbg-20190331.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R11.htm</HtmlFileName>
      <LongName>00000011 - Disclosure - Business Combinations</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://olb.com/role/BusinessCombination</Role>
      <ShortName>Business Combinations</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>11</Position>
    </Report>
    <Report instance="olbg-20190331.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R12.htm</HtmlFileName>
      <LongName>00000012 - Disclosure - Common Control Mergers</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://olb.com/role/CommonControlMergers</Role>
      <ShortName>Common Control Mergers</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>12</Position>
    </Report>
    <Report instance="olbg-20190331.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R13.htm</HtmlFileName>
      <LongName>00000013 - Disclosure - Note Payable</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://olb.com/role/NotePayable</Role>
      <ShortName>Note Payable</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>13</Position>
    </Report>
    <Report instance="olbg-20190331.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R14.htm</HtmlFileName>
      <LongName>00000014 - Disclosure - Warrants</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://olb.com/role/Warrants</Role>
      <ShortName>Warrants</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>14</Position>
    </Report>
    <Report instance="olbg-20190331.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R15.htm</HtmlFileName>
      <LongName>00000015 - Disclosure - Stock Options</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://olb.com/role/StockOptions</Role>
      <ShortName>Stock Options</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>15</Position>
    </Report>
    <Report instance="olbg-20190331.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R16.htm</HtmlFileName>
      <LongName>00000016 - Disclosure - Related Party Transactions</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://olb.com/role/Relatedpartytransactions</Role>
      <ShortName>Related Party Transactions</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>16</Position>
    </Report>
    <Report instance="olbg-20190331.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R17.htm</HtmlFileName>
      <LongName>00000017 - Disclosure - Commitments and Contingencies</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://olb.com/role/Commitment</Role>
      <ShortName>Commitments and Contingencies</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>17</Position>
    </Report>
    <Report instance="olbg-20190331.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R18.htm</HtmlFileName>
      <LongName>00000018 - Disclosure - Summary of Significant Accounting Policies (Policies)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://olb.com/role/SummaryOfSignificantAccountingPoliciesPolicies</Role>
      <ShortName>Summary of Significant Accounting Policies (Policies)</ShortName>
      <MenuCategory>Policies</MenuCategory>
      <ParentRole>http://olb.com/role/SummaryOfSignificantAccountingPolicies</ParentRole>
      <Position>18</Position>
    </Report>
    <Report instance="olbg-20190331.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R19.htm</HtmlFileName>
      <LongName>00000019 - Disclosure - Intangible Assets (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://olb.com/role/IntangibleAssetsTables</Role>
      <ShortName>Intangible Assets (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://olb.com/role/IntangibleAssets</ParentRole>
      <Position>19</Position>
    </Report>
    <Report instance="olbg-20190331.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R20.htm</HtmlFileName>
      <LongName>00000020 - Disclosure - Business Combinations (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://olb.com/role/BusinessCombinationTables</Role>
      <ShortName>Business Combinations (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://olb.com/role/BusinessCombination</ParentRole>
      <Position>20</Position>
    </Report>
    <Report instance="olbg-20190331.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R21.htm</HtmlFileName>
      <LongName>00000021 - Disclosure - Common Control Mergers (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://olb.com/role/CommonControlMergersTables</Role>
      <ShortName>Common Control Mergers (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://olb.com/role/CommonControlMergers</ParentRole>
      <Position>21</Position>
    </Report>
    <Report instance="olbg-20190331.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R22.htm</HtmlFileName>
      <LongName>00000022 - Disclosure - Warrants (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://olb.com/role/WarrantsTables</Role>
      <ShortName>Warrants (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://olb.com/role/Warrants</ParentRole>
      <Position>22</Position>
    </Report>
    <Report instance="olbg-20190331.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R23.htm</HtmlFileName>
      <LongName>00000023 - Disclosure - Stock Options (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://olb.com/role/StockOptionsTables</Role>
      <ShortName>Stock Options (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://olb.com/role/StockOptions</ParentRole>
      <Position>23</Position>
    </Report>
    <Report instance="olbg-20190331.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R24.htm</HtmlFileName>
      <LongName>00000024 - Disclosure - Background (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://olb.com/role/BackgroundDetails</Role>
      <ShortName>Background (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://olb.com/role/Background</ParentRole>
      <Position>24</Position>
    </Report>
    <Report instance="olbg-20190331.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R25.htm</HtmlFileName>
      <LongName>00000025 - Disclosure - Summary of Significant Accounting Policies (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://olb.com/role/SummaryOfSignificantAccountingPoliciesDetails</Role>
      <ShortName>Summary of Significant Accounting Policies (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://olb.com/role/SummaryOfSignificantAccountingPoliciesPolicies</ParentRole>
      <Position>25</Position>
    </Report>
    <Report instance="olbg-20190331.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R26.htm</HtmlFileName>
      <LongName>00000026 - Disclosure - Liquidity and Capital Resources (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://olb.com/role/LiquidityAndCapitalResourcesDetails</Role>
      <ShortName>Liquidity and Capital Resources (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://olb.com/role/LiquidityAndCapitalResources</ParentRole>
      <Position>26</Position>
    </Report>
    <Report instance="olbg-20190331.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R27.htm</HtmlFileName>
      <LongName>00000027 - Disclosure - Intangible Assets (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://olb.com/role/IntangibleAssetsDetails</Role>
      <ShortName>Intangible Assets (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://olb.com/role/IntangibleAssetsTables</ParentRole>
      <Position>27</Position>
    </Report>
    <Report instance="olbg-20190331.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R28.htm</HtmlFileName>
      <LongName>00000028 - Disclosure - Intangible Assets (Details 1)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://olb.com/role/IntangibleAssetsDetails1</Role>
      <ShortName>Intangible Assets (Details 1)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://olb.com/role/IntangibleAssetsTables</ParentRole>
      <Position>28</Position>
    </Report>
    <Report instance="olbg-20190331.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R29.htm</HtmlFileName>
      <LongName>00000029 - Disclosure - Intangible Assets (Details Textuals)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://olb.com/role/IntangibleAssetsDetailsTextuals</Role>
      <ShortName>Intangible Assets (Details Textuals)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://olb.com/role/IntangibleAssetsTables</ParentRole>
      <Position>29</Position>
    </Report>
    <Report instance="olbg-20190331.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R30.htm</HtmlFileName>
      <LongName>00000030 - Disclosure - Business Combinations (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://olb.com/role/BusinessCombinationDetails</Role>
      <ShortName>Business Combinations (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://olb.com/role/BusinessCombinationTables</ParentRole>
      <Position>30</Position>
    </Report>
    <Report instance="olbg-20190331.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R31.htm</HtmlFileName>
      <LongName>00000031 - Disclosure - Business Combinations (Details 1)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://olb.com/role/BusinessCombinationsDetails1</Role>
      <ShortName>Business Combinations (Details 1)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://olb.com/role/BusinessCombinationTables</ParentRole>
      <Position>31</Position>
    </Report>
    <Report instance="olbg-20190331.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R32.htm</HtmlFileName>
      <LongName>00000032 - Disclosure - Business Combinations (Details Textual)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://olb.com/role/BusinessCombinationDetailsTextual</Role>
      <ShortName>Business Combinations (Details Textual)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://olb.com/role/BusinessCombinationTables</ParentRole>
      <Position>32</Position>
    </Report>
    <Report instance="olbg-20190331.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R33.htm</HtmlFileName>
      <LongName>00000033 - Disclosure - Common Control Mergers (Details 1)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://olb.com/role/CommonControlMergersDetails1</Role>
      <ShortName>Common Control Mergers (Details 1)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://olb.com/role/CommonControlMergersTables</ParentRole>
      <Position>33</Position>
    </Report>
    <Report instance="olbg-20190331.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R34.htm</HtmlFileName>
      <LongName>00000034 - Disclosure - Common Control Mergers (Details Textual)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://olb.com/role/CommonControlMergersDetailsTextual</Role>
      <ShortName>Common Control Mergers (Details Textual)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://olb.com/role/CommonControlMergersTables</ParentRole>
      <Position>34</Position>
    </Report>
    <Report instance="olbg-20190331.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R35.htm</HtmlFileName>
      <LongName>00000035 - Disclosure - Note Payable (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://olb.com/role/NotePayableDetails</Role>
      <ShortName>Note Payable (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://olb.com/role/NotePayable</ParentRole>
      <Position>35</Position>
    </Report>
    <Report instance="olbg-20190331.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R36.htm</HtmlFileName>
      <LongName>00000036 - Disclosure - Warrants (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://olb.com/role/WarrantsDetails1</Role>
      <ShortName>Warrants (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://olb.com/role/WarrantsTables</ParentRole>
      <Position>36</Position>
    </Report>
    <Report instance="olbg-20190331.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R37.htm</HtmlFileName>
      <LongName>00000037 - Disclosure - Warrants (Details Textual)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://olb.com/role/WarrantsDetailsTextual</Role>
      <ShortName>Warrants (Details Textual)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://olb.com/role/WarrantsTables</ParentRole>
      <Position>37</Position>
    </Report>
    <Report instance="olbg-20190331.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R38.htm</HtmlFileName>
      <LongName>00000038 - Disclosure - Stock Options (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://olb.com/role/StockOptionsDetails</Role>
      <ShortName>Stock Options (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://olb.com/role/StockOptionsTables</ParentRole>
      <Position>38</Position>
    </Report>
    <Report instance="olbg-20190331.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R39.htm</HtmlFileName>
      <LongName>00000039 - Disclosure - Stock Options (Details Textual)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://olb.com/role/StockOptionsDetailsTextual</Role>
      <ShortName>Stock Options (Details Textual)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://olb.com/role/StockOptionsTables</ParentRole>
      <Position>39</Position>
    </Report>
    <Report instance="olbg-20190331.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R40.htm</HtmlFileName>
      <LongName>00000040 - Disclosure - Related Party Transactions (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://olb.com/role/RelatedPartyTransactionsDetails</Role>
      <ShortName>Related Party Transactions (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://olb.com/role/Relatedpartytransactions</ParentRole>
      <Position>40</Position>
    </Report>
    <Report instance="olbg-20190331.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R41.htm</HtmlFileName>
      <LongName>00000041 - Disclosure -  Commitments and Contingencies (Details Textual)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://olb.com/role/CommitmentsAndContingenciesDetailsTextual</Role>
      <ShortName>Commitments and Contingencies (Details Textual)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://olb.com/role/Commitment</ParentRole>
      <Position>41</Position>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <LongName>All Reports</LongName>
      <ReportType>Book</ReportType>
      <ShortName>All Reports</ShortName>
    </Report>
  </MyReports>
  <InputFiles>
    <File>olbg-20190331.xml</File>
    <File>olbg-20190331.xsd</File>
    <File>olbg-20190331_cal.xml</File>
    <File>olbg-20190331_def.xml</File>
    <File>olbg-20190331_lab.xml</File>
    <File>olbg-20190331_pre.xml</File>
  </InputFiles>
  <SupplementalFiles/>
  <BaseTaxonomies>
    <BaseTaxonomy>http://fasb.org/us-gaap/2018-01-31</BaseTaxonomy>
    <BaseTaxonomy>http://xbrl.sec.gov/invest/2013-01-31</BaseTaxonomy>
    <BaseTaxonomy>http://fasb.org/srt/2018-01-31</BaseTaxonomy>
    <BaseTaxonomy>http://xbrl.sec.gov/dei/2018-01-31</BaseTaxonomy>
  </BaseTaxonomies>
  <HasPresentationLinkbase>true</HasPresentationLinkbase>
  <HasCalculationLinkbase>true</HasCalculationLinkbase>
</FilingSummary>
