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Debt - Additional Information (Detail) (USD $) In Millions, unless otherwise specified | 12 Months Ended |
--- | --- | ---
Dec. 31, 2012 | Dec. 31, 2011
Debt Instrument [Line Items] |  |
Weighted average interest rate | 5.15% | 5.38%
Repayment of mortgage loans | $ 227.2 |
Variable rate debt converted to fixed rate debt | 41.0 |
Fortress Credit Corp |  |
Debt Instrument [Line Items] |  |
Repayment of mortgage loans | 89.3 |
Exit fees, interest and legal fees | 2.1 |
Lehman Brothers Bank |  |
Debt Instrument [Line Items] |  |
Repayment of mortgage loans | 78.2 |
Extinguishment premium and other transaction costs | 1.4 |
Marshall and Isley Bank |  |
Debt Instrument [Line Items] |  |
Repayment of mortgage loans | 21.4 |
National Bank of Omaha |  |
Debt Instrument [Line Items] |  |
Repayment of mortgage loans | $ 38.3 |

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- Definition Extinguishment Premium And Other Transaction Costs + References No definition available. + Details
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Balance Type: | debit
Period Type: | duration

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- Definition Notional Amount of Variable Rate Debt Converted into Fixed Rate Debt + References No definition available. + Details
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Namespace Prefix: | inn_
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Balance Type: | credit
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- Details
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- Definition Reflects the calculation as of the balance sheet date of the average interest rate weighted by the amount of debt outstanding by type or by instrument at that time. + References No definition available. + Details
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Balance Type: | na
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- Definition The amount of cash paid during the current period for fees which are not defined elsewhere in the taxonomy. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 25 -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3536-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 27 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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- Definition The cash outflow during the period from the repayment of aggregate short-term and long-term debt. Excludes payment of capital lease obligations. + References No definition available. + Details
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