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Basis of Presentation and Significant Accounting Policies (Details)	9 Months Ended
	Sep. 30, 2014 item	Mar. 31, 2014
Segment Disclosure
Number of reportable segments	1us-gaap_NumberOfReportableSegments
Non-controlling interests | Joint venture
Non-controlling interests
Third-party ownership (as a percent)		19.00%us-gaap_MinorityInterestOwnershipPercentageByNoncontrollingOwners / dei_LegalEntityAxis = inn_JointVentureMember / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember

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- Definition

The equity interest of noncontrolling shareholders, partners or other equity holders in consolidated entity.

+ References

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Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.

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