Adjustment (reserve) of preferred equity interests.

No definition available.

Name:	sitc_AdjustmentReserveOfPreferredEquityInterests
Namespace Prefix:	sitc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Company share of gain on sale of joint venture assets.

+ References

No definition available.

+ Details

Name:	sitc_CompanyShareOfGainOnSaleOfJointVentureAssets
Namespace Prefix:	sitc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Gross leasable area of properties owned.

+ References

No definition available.

+ Details

Name:	sitc_GrossLeasableAreaOfPropertiesOwned
Namespace Prefix:	sitc_
Data Type:	num:areaItemType
Balance Type:	na
Period Type:	instant

- Definition

Minimum net asset sales threshold used to repay common equity members.

+ References

No definition available.

+ Details

Name:	sitc_MinimumNetAssetSalesThresholdUsedToRepayCommonEquityMembers
Namespace Prefix:	sitc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Number of assets contributed to new joint venture.

+ References

No definition available.

+ Details

Name:	sitc_NumberOfAssetsContributedToNewJointVenture
Namespace Prefix:	sitc_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Number of assets with nominal interest.

+ References

No definition available.

+ Details

Name:	sitc_NumberOfAssetsWithNominalInterest
Namespace Prefix:	sitc_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Number of properties sold attributable to the disposal group during the reporting period.

+ References

No definition available.

+ Details

Name:	sitc_NumberOfPropertiesSold
Namespace Prefix:	sitc_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Number of unconsolidated joint venture investments.

+ References

No definition available.

+ Details

Name:	sitc_NumberOfUnconsolidatedJointVentureInvestments
Namespace Prefix:	sitc_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

The percentage of ownership of equity participation by the joint venture partner for the investee accounted for under the equity method of accounting.

+ References

No definition available.

+ Details

Name:	sitc_OwnershipInterestOfJointVenturePartner
Namespace Prefix:	sitc_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Paid in kind no longer recognized.

+ References

No definition available.

+ Details

Name:	sitc_PaidInKindNoLongerRecognized
Namespace Prefix:	sitc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Percentage deferral of fixed distribution at joint venture partners option.

+ References

No definition available.

+ Details

Name:	sitc_PercentageDeferralOfFixedDistributionAtJointVenturePartnersOption
Namespace Prefix:	sitc_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Percentage of net asset sale proceeds generated thereafter expected to available to repay preferred members.

+ References

No definition available.

+ Details

Name:	sitc_PercentageOfNetAssetSaleProceedsGeneratedThereafterExpectedToAvailableToRepayPreferredMembers
Namespace Prefix:	sitc_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Percentage of net asset sales in excess of minimum net asset sales threshold for common equity members allocated to repay preferred equity members.

+ References

No definition available.

+ Details

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

- Definition

Preferred stock accrued paid-in-kind dividend rate percentage.

+ References

No definition available.

+ Details

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

- Definition

Preferred stock cash dividend rate percentage.

+ References

No definition available.

+ Details

Name:	sitc_PreferredStockCashDividendRatePercentage
Namespace Prefix:	sitc_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Redemption of preferred equity in full at company option.

+ References

No definition available.

+ Details

Name:	sitc_RedemptionOfPreferredEquityInFullAtCompanyOption
Namespace Prefix:	sitc_
Data Type:	us-types:durationStringItemType
Balance Type:	na
Period Type:	duration

- Definition

Redemption of preferred equity in full at company option year.

+ References

No definition available.

+ Details

Name:	sitc_RedemptionOfPreferredEquityInFullAtCompanyOptionYear
Namespace Prefix:	sitc_
Data Type:	xbrli:gYearItemType
Balance Type:	na
Period Type:	duration

- Definition

Redemption of preferred equity in full or in part at partner's option.

+ References

No definition available.

+ Details

Name:	sitc_RedemptionOfPreferredEquityInFullOrInPartAtPartnersOption
Namespace Prefix:	sitc_
Data Type:	us-types:durationStringItemType
Balance Type:	na
Period Type:	duration

- Definition

Valuation allowance of preferred equity interest.

+ References

No definition available.

+ Details

Name:	sitc_ValuationAllowanceOfPreferredEquityInterest
Namespace Prefix:	sitc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Percentage of voting equity interests acquired at the acquisition date in the business combination.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463

+ Details

Name:	us-gaap_BusinessAcquisitionPercentageOfVotingInterestsAcquired
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

In a business combination achieved in stages, this element represents the amount of net gain (loss) recognized by the entity as a result of remeasuring to fair value the equity interest in the acquiree it held before the business combination.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (g)(2)
-URI http://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463

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

- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=114001798&loc=d3e33918-111571

+ Details

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Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 10
-Section 45
-Paragraph 1
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 25
-Subparagraph (a)
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-Name Accounting Standards Codification
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-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.12)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

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

- Definition

This element represents the amount of gain (loss) on sale of properties during the reporting period net of the applicable income taxes realized.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 974
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-15.(a)(1)(ii))
-URI http://asc.fasb.org/extlink&oid=6875705&loc=d3e641549-123027

+ Details

Name:	us-gaap_GainLossOnSaleOfPropertiesNetOfApplicableIncomeTaxes
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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Including the current and noncurrent portions, carrying value as of the balance sheet date of all notes and loans payable (with maturities initially due after one year or beyond the operating cycle if longer).

+ References

Reference 1: 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(a)(16))
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-Name Accounting Standards Codification
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-Paragraph 1
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-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(16))
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The percentage rate used to calculate dividend payments on preferred stock.

+ References

No definition available.

+ Details

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Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

The cash inflow associated with the sale of equity method investments, which are investments in joint ventures and entities in which the entity has an equity ownership interest normally of 20 to 50 percent and exercises significant influence.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 12
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3179-108585

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- 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

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- Details

Name:	us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=us-gaap_CorporateJointVentureMember
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Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=sitc_ShoppingCentersAndLandMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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

- Details

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

- Details

Name:	srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=sitc_BREDDRJointVenturesMember
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Balance Type:
Period Type:

- Details

Name:	us-gaap_DividendsAxis=sitc_PreferredEquityFixedDividendRateMember
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Period Type:

- Details

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Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_StatementEquityComponentsAxis=us-gaap_PreferredStockMember
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Period Type:

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Investments in and Advances to Joint Ventures - Additional Information (Detail) ft² in Millions	1 Months Ended	3 Months Ended	12 Months Ended
	Nov. 30, 2018 USD ($) ft²	Dec. 31, 2018 USD ($) ShoppingCenter Property	Dec. 31, 2018 USD ($) ShoppingCenter Property Investment	Dec. 31, 2017 USD ($) Property	Dec. 31, 2016 USD ($) Property
Schedule Of Equity Method Investments [Line Items]
Equity method investment, ownership percentage in unconsolidated joint venture					25.00%
Mortgage debt		$ 88,743,000	$ 88,743,000	$ 641,082,000
Gain on disposition of real estate, net		$ 182,300,000	$ 225,406,000	161,164,000	$ 73,386,000
Percentage of net asset sale proceeds generated thereafter expected to available to repay preferred member		100.00%	100.00%
Preferred investment interest valuation allowance		$ 72,400,000	$ 72,400,000	61,000,000
Reserve of preferred equity interests			11,422,000	61,000,000	0
Dividend, aggregate amount			12,200,000	6,300,000
Gain (loss) on change in control of interests			$ 0	$ 368,000	$ (1,087,000)
Joint Venture Partner [Member]
Schedule Of Equity Method Investments [Line Items]
Number of properties sold \| Property					10
Shopping Centers and Land [Member]
Schedule Of Equity Method Investments [Line Items]
Number of properties sold \| Property			40	15	17
Proceeds from sale of joint venture assets			$ 786,500,000	$ 545,600,000	$ 214,600,000
Gain on sale of joint venture assets			$ 13,700,000	5,700,000	13,800,000
Dividend Trust Portfolio JV LP [Member]
Schedule Of Equity Method Investments [Line Items]
Number of properties owned \| Property		10	10
Number of square feet owned \| ft²	3.4
Equity method investment, ownership percentage in unconsolidated joint venture	20.00%	20.00%	20.00%
Unconsolidated joint venture value	$ 607,200,000
Mortgage debt	364,300,000
Gain on disposition of real estate, net	$ 186,400,000
Unconsolidated Joint Ventures [Member]
Schedule Of Equity Method Investments [Line Items]
Mortgage debt		$ 2,212,503,000	$ 2,212,503,000	2,501,163,000
Gain on disposition of real estate, net			$ 93,753,000	$ 101,806,000	$ 57,261,000
Unconsolidated Joint Ventures [Member] \| Shopping Centers and Land [Member]
Schedule Of Equity Method Investments [Line Items]
Number of properties sold \| Property			3
Proceeds from sale of joint venture assets			$ 35,100,000
BRE DDR Joint Ventures [Member]
Schedule Of Equity Method Investments [Line Items]
Number of unconsolidated investments \| Investment			2
Maximum preferred investment fixed distribution deferral		2.00%	2.00%
Redemption of preferred equity in full or in part at partners option			during the first three years
Redemption of preferred investment in full at company option			after seven years
Dividend, cash interest rate			6.50%
Dividend, accrued PIK interest rate			2.00%
BRE DDR Joint Ventures [Member] \| Preferred Equity Fixed Dividend Rate [Member]
Schedule Of Equity Method Investments [Line Items]
Preferred equity fixed dividend rate per annum			8.50%
BRE DDR III [Member]
Schedule Of Equity Method Investments [Line Items]
Equity method investment, ownership percentage in unconsolidated joint venture		5.00%	5.00%
Ownership interest of joint venture partner		95.00%	95.00%
Ownership interest in joint venture		5.00%	5.00%
Redemption of preferred investment in full at company option year			2021
Preferred investment interest valuation allowance		$ 58,700,000	$ 58,700,000
BRE DDR III [Member] \| Preferred Shares [Member]
Schedule Of Equity Method Investments [Line Items]
Remaining net asset sale proceeds			52.50%
BRE DDR III [Member] \| Common Equity [Member]
Schedule Of Equity Method Investments [Line Items]
Remaining net asset sale proceeds			47.50%
BRE DDR IV [Member]
Schedule Of Equity Method Investments [Line Items]
Equity method investment, ownership percentage in unconsolidated joint venture		5.00%	5.00%
Ownership interest of joint venture partner		95.00%	95.00%
Ownership interest in joint venture		5.00%	5.00%
Redemption of preferred investment in full at company option year			2022
Minimum net asset sales threshold payable		$ 4,900,000	$ 4,900,000
Preferred investment interest valuation allowance		$ 13,700,000	$ 13,700,000
BRE DDR IV [Member] \| Preferred Shares [Member]
Schedule Of Equity Method Investments [Line Items]
Number of assets with nominal interest \| ShoppingCenter		3	3
Minimum net asset sales threshold payable		$ 1,100,000	$ 1,100,000