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

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.

No definition available.

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