Deferred Costs and Intangibles, net - Amortization Expense (Details) - USD ($) $ in Thousands	9 Months Ended
Sep. 30, 2021	Sep. 30, 2020
Deferred Costs [Abstract]
Amortization of deferred leasing costs, lease intangibles and other	$ 8,005	$ 10,464
Amortization of above market lease intangibles	$ 700	$ 725

The aggregate amount of recurring noncash expense charged against earnings in the period to allocate the cost of deferred leasing costs, lease intangibles and other over their estimated remaining economic lives.

No definition available.

Name:	krg_AmortizationOfDeferredLeasingCostsLeaseIntangiblesAndOther
Namespace Prefix:	krg_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration