Acquired Properties - Narrative (Details) $ in Thousands	3 Months Ended
Mar. 31, 2022 USD ($)	Mar. 31, 2021 USD ($) property
Business Combination and Asset Acquisition [Abstract]
Transaction costs capitalized \| $	$ 814	$ 0
Number of retail properties acquired \| property		0

Asset Acquisition, Transaction Costs Capitalized During the Period

No definition available.

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Namespace Prefix:	ivt_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration