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    <Log type="Info">Element us-gaap_PreferredStockDividendRatePercentage had a mix of decimals attribute values: 3 5.</Log>
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    <Log type="Info">'Monetary' elements on report '4021 - Disclosure - Summary of Significant Accounting Policies (Details 2)' had a mix of different decimal attribute values.</Log>
    <Log type="Info">'Monetary' elements on report '4022 - Disclosure - Summary of Significant Accounting Policies (Details 3)' had a mix of different decimal attribute values.</Log>
    <Log type="Info">'Monetary' elements on report '4030 - Disclosure - Real Estate (Details)' had a mix of different decimal attribute values.</Log>
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    <Log type="Info">'Monetary' elements on report '4040 - Disclosure - Deferred Leasing Intangibles (Details)' had a mix of different decimal attribute values.</Log>
    <Log type="Info">'Monetary' elements on report '4050 - Disclosure - Debt (Details)' had a mix of different decimal attribute values.</Log>
    <Log type="Info">'Monetary' elements on report '4060 - Disclosure - Use of Derivative Financial Instruments (Details)' had a mix of different decimal attribute values.</Log>
    <Log type="Info">'Monetary' elements on report '4062 - Disclosure - Use of Derivative Financial Instruments (Details 3)' had a mix of different decimal attribute values.</Log>
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    <Log type="Info">Process Flow-Through: 0010 - Statement - Consolidated Balance Sheets</Log>
    <Log type="Info">	Process Flow-Through: Removing column 'Jun. 30, 2012'</Log>
    <Log type="Info">	Process Flow-Through: Removing column 'Dec. 31, 2011'</Log>
    <Log type="Info">Process Flow-Through: 0015 - Statement - Consolidated Balance Sheets (Parenthetical)</Log>
    <Log type="Info">	Process Flow-Through: Removing column 'Nov. 02, 2011
Series A Preferred Stock'</Log>
    <Log type="Info">	Process Flow-Through: Removing column 'Apr. 16, 2013
Series B Preferred Stock'</Log>
    <Log type="Info">Process Flow-Through: 0020 - Statement - Consolidated Statements of Operations</Log>
    <Log type="Info">Process Flow-Through: 0030 - Statement - Consolidated Statements of Comprehensive Income (loss)</Log>
    <Log type="Info">Process Flow-Through: 0050 - Statement - Consolidated Statements of Cash Flows</Log>
  </Logs>
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    <File>stag-20130630.xml</File>
    <File>stag-20130630.xsd</File>
    <File>stag-20130630_cal.xml</File>
    <File>stag-20130630_def.xml</File>
    <File>stag-20130630_lab.xml</File>
    <File>stag-20130630_pre.xml</File>
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  <BaseTaxonomies />
  <HasPresentationLinkbase>true</HasPresentationLinkbase>
  <HasCalculationLinkbase>true</HasCalculationLinkbase>
</FilingSummary>
