Other Assets and Intangibles, net - Components of Other Assets and Intangibles (Parenthetical) (Detail) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2021	Mar. 31, 2020
Intangible Assets Net Excluding Goodwill [Abstract]
Amortization expense	$ 5.6	$ 3.8

Amortization of intangible assets excluding above and below market leases.

No definition available.

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