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Impairment Charges - Additional Information (Detail) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2021 | Mar. 31, 2020
Asset Impairment Charges [Abstract] |  |
Total impairment charges | $ 7.3 | $ 18.1

X
- Definition Amount of write-down of assets recognized into earnings included in continuing operations and discontinued operations and the equity method investment other than temporary impairment. + References No definition available. + Details
Name: | sitc_ImpairmentChargesIncludingDiscontinuedOperationsAndInvestment
Namespace Prefix: | sitc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_AssetImpairmentChargesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration