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Unrecognized cost of unvested share-based compensation awards to be recognized during the fourth fiscal year following the latest fiscal year.

No definition available.

Name:	inn_EmployeeServiceShareBasedCompensationNonvestedAwardsCompensationCostYearFour
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Data Type:	xbrli:monetaryItemType
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Unrecognized cost of unvested share-based compensation awards to be recognized during the third fiscal year following the latest fiscal year.

No definition available.

Name:	inn_EmployeeServiceShareBasedCompensationNonvestedAwardsCompensationCostYearThree
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Unrecognized cost of unvested share-based compensation awards to be recognized during the second fiscal year following the latest fiscal year.

No definition available.

Name:	inn_EmployeeServiceShareBasedCompensationNonvestedAwardsCompensationCostYearTwo
Namespace Prefix:	inn_
Data Type:	xbrli:monetaryItemType
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This concept does not have a custom type definition

No definition available.

Name:	inn_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostToBeRecognizedAbstract
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Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Year Five

No definition available.

Name:	inn_EmployeeServiceSharebasedCompensationNonvestedAwardsCompensationCostYearFive
Namespace Prefix:	inn_
Data Type:	xbrli:monetaryItemType
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Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SAB Topic 14.F)
-URI http://asc.fasb.org/extlink&oid=27013229&loc=d3e301413-122809

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5047-113901

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (h)(1)(i)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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Unrecognized cost of unvested share-based compensation awards.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (i)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems
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Data Type:	xbrli:stringItemType
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Number of shares issued in lieu of cash for services contributed to the entity. Number of shares includes, but is not limited to, shares issued for services contributed by vendors and founders.

No definition available.

Name:	us-gaap_StockIssuedDuringPeriodSharesIssuedForServices
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

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Name:	inn_VestingCriteriaAxis=inn_VestingBasedOnServiceMember
Namespace Prefix:
Data Type:	na
Balance Type:
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Name:	inn_VestingCriteriaAxis=inn_VestingBasedOnPerformanceMember
Namespace Prefix:
Data Type:	na
Balance Type:
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Name:	us-gaap_IncomeStatementLocationAxis=us-gaap_GeneralAndAdministrativeExpenseMember
Namespace Prefix:
Data Type:	na
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Name:	us-gaap_AwardTypeAxis=us-gaap_EmployeeStockOptionMember
Namespace Prefix:
Data Type:	na
Balance Type:
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Name:	us-gaap_AwardTypeAxis=us-gaap_StockCompensationPlanMember
Namespace Prefix:
Data Type:	na
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Name:	us-gaap_TitleOfIndividualAxis=us-gaap_DirectorMember
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