Debt Instrument, Amortization Period

No definition available.

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

- Definition

Financing Receivable, Initial Purchase Option, Ownership Percentage

+ References

No definition available.

+ Details

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Namespace Prefix:	inn_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (b)(1)
-URI https://asc.fasb.org/extlink&oid=123466204&loc=SL6031897-161870

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(16))
-URI https://asc.fasb.org/extlink&oid=126734703&loc=d3e572229-122910

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(22))
-URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(16))
-URI https://asc.fasb.org/extlink&oid=126897435&loc=d3e534808-122878

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

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.

+ References

No definition available.

+ Details

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

- Definition

The number of units in a real estate property owned as of the balance sheet date.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=inn_BrickellJointVentureMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=inn_BrickellMortgageLoanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis=inn_ACElementHotelMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	dei_LegalEntityAxis=inn_BrickellJointVentureMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

DEBT - Brickell Mortgage Loan (Details) $ in Thousands	Mar. 23, 2022	Dec. 06, 2018	Sep. 30, 2022 USD ($)	Jun. 30, 2022 room	Jun. 10, 2022 USD ($)	Dec. 31, 2021 USD ($)
Debt Instrument [Line Items]
Mortage loan amount			$ 1,481,147			$ 1,081,315
Mortgage loans
Debt Instrument [Line Items]
Mortage loan amount			$ 158,647			$ 163,315
Brickell Joint Venture \| Brickell Mortgage Loan \| Mortgage loans
Debt Instrument [Line Items]
Initial Purchase Option, ownership percentage				90.00%
Mortage loan amount					$ 47,000
Debt instrument, amortization period	25 years
AC/Element Hotel \| Brickell Joint Venture
Debt Instrument [Line Items]
Initial Purchase Option, ownership percentage				90.00%
AC/Element Hotel \| Brickell Joint Venture \| Brickell Mortgage Loan \| Mortgage loans
Debt Instrument [Line Items]
Initial Purchase Option, ownership percentage				100.00%
Number of guestrooms \| room				264
Debt basis spread on variable rate		3.00%
Brickell Joint Venture \| Brickell Joint Venture
Debt Instrument [Line Items]
Initial Purchase Option, ownership percentage				10.00%