- Definition

The deposits required under the agreement as a percentage of the hotel property's gross revenue, into a reserve fund for capital expenditures.

+ References

No definition available.

+ Details

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Namespace Prefix:	inn_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

The amount of fees expensed during the reporting period related to the agreement.

+ References

No definition available.

+ Details

Name:	inn_FeesExpensedRelatedToAgreement
Namespace Prefix:	inn_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The franchise fees received by each franchisor as a percentage of each real estate property's gross revenue under the agreement.

+ References

No definition available.

+ Details

Name:	inn_FranchiseFeesReceivedByEachFranchisorAsPercentageOfEachRealEstatePropertiesGrossRevenue
Namespace Prefix:	inn_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

The marketing fees payable by the entity as a percentage of gross revenue under the agreement.

+ References

No definition available.

+ Details

Name:	inn_MarketingFeesPayableAsPercentageOfEachRealEstatePropertiesGrossRevenue
Namespace Prefix:	inn_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Period the contract is outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

Name:	inn_TermOfContract
Namespace Prefix:	inn_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	us-gaap_TypeOfArrangementAxis=inn_FranchiseAgreementsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_TypeOfArrangementAxis=inn_ManagementAgreementsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

COMMITMENTS AND CONTINGENCIES (Details 2) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Franchise agreements
Commitments and contingencies
Fees related to the agreement	$ 33.6	$ 27.7	$ 20.7
Franchise agreements \| Minimum
Commitments and contingencies
Agreement term	10 years
Franchise fees received by each franchisor as a percentage of each hotel property's gross revenue	2.00%
Franchise agreements \| Maximum
Commitments and contingencies
Agreement term	20 years
Franchise fees received by each franchisor as a percentage of each hotel property's gross revenue	6.00%
Marketing fees payable as a percentage of gross revenue	4.00%
Deposits required under the agreement as a percentage of the hotel property's gross revenue, into a reserve fund for capital expenditures	5.00%
Management agreements
Commitments and contingencies
Fees related to the agreement	$ 16.1	$ 13.5	$ 9.2
Management agreements \| Minimum
Commitments and contingencies
Agreement term	3 years
Management agreements \| Maximum
Commitments and contingencies
Agreement term	25 years