Line of Credit, Additional Borrowing Capacity Without Restrictions

No definition available.

Name:	inn_LineofCreditAdditionalBorrowingCapacityWithoutRestrictions
Namespace Prefix:	inn_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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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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

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Balance Type:	credit
Period Type:	instant

- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

+ Details

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

- Definition

Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

+ References

+ Details

Name:	us-gaap_DebtInstrumentInterestRateEffectivePercentage
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

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Data Type:	dtr-types:percentItemType
Balance Type:	na
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.

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+ Details

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

- Definition

Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility.

+ References

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+ Details

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

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

+ Details

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Namespace Prefix:	us-gaap_
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Balance Type:	credit
Period Type:	instant

- Details

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Namespace Prefix:
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Balance Type:
Period Type:

- Details

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Balance Type:
Period Type:

- Details

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Period Type:

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Period Type:

- Details

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Namespace Prefix:
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Balance Type:
Period Type:

- Details

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Namespace Prefix:
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Balance Type:
Period Type:

- Details

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Namespace Prefix:
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Balance Type:
Period Type:

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DEBT - GIC Joint Venture Credit Facility (Details) - USD ($)		9 Months Ended
	Feb. 15, 2023	Sep. 30, 2023	Sep. 15, 2023	Dec. 31, 2022	Oct. 08, 2019	Dec. 06, 2018
Debt Instrument [Line Items]
Principal Balance Outstanding		$ 1,461,340,000		$ 1,463,124,000
$200 Million Term Loan \| Unsecured debt
Debt Instrument [Line Items]
Debt instrument, face amount		$ 200,000,000				$ 200,000,000
Interest Rate		7.32%
Principal Balance Outstanding		$ 200,000,000		200,000,000
$200 Million Term Loan \| SOFR \| Minimum
Debt Instrument [Line Items]
Debt basis spread on variable rate		1.35%
$125 Million Revolver \| SOFR
Debt Instrument [Line Items]
Debt basis spread on variable rate		1.00%
Interest Rate		0.50%
Debt instrument, effective interest rate		1.15%
$125 Million Revolver \| SOFR \| Unsecured debt
Debt Instrument [Line Items]
Debt basis spread on variable rate		0.10%
$125 Million Revolver \| SOFR \| Minimum \| Unsecured debt
Debt Instrument [Line Items]
Interest Rate		2.15%
$75 Million Term Loan
Debt Instrument [Line Items]
Debt instrument, face amount			$ 75,000,000		$ 75,000,000
$75 Million Term Loan \| Unsecured debt
Debt Instrument [Line Items]
Debt instrument, face amount		$ 75,000,000
Principal Balance Outstanding		75,000,000		75,000,000
Joint Venture Credit Facility \| Unsecured debt
Debt Instrument [Line Items]
Principal Balance Outstanding		675,943,000		676,325,000
Revolving Credit Facility \| $125 Million Revolver
Debt Instrument [Line Items]
Credit facility, maximum borrowing capacity			$ 125,000,000		125,000,000
Revolving Credit Facility \| $125 Million Revolver \| Unsecured debt
Debt Instrument [Line Items]
Credit facility, maximum borrowing capacity		$ 125,000,000
Interest Rate		7.58%
Principal Balance Outstanding		$ 125,000,000		$ 125,000,000
Revolving Credit Facility \| $75 Million Term Loan
Debt Instrument [Line Items]
Interest Rate		0.25%
Revolving Credit Facility \| $75 Million Term Loan \| Unsecured debt
Debt Instrument [Line Items]
Interest Rate		7.53%
Line of Credit \| SOFR
Debt Instrument [Line Items]
Debt basis spread on variable rate	0.10%
Line of Credit \| Joint Venture Credit Facility
Debt Instrument [Line Items]
Credit facility, maximum borrowing capacity					500,000,000
Credit facility, current borrowing capacity					200,000,000
Additional borrowing capacity					$ 300,000,000