INTANGIBLE ASSETS AND LIABILITIES - Activity (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2022 USD ($) property	Dec. 31, 2021 USD ($)
Intangible Assets And Liabilities
Number of multi-tenant income properties sold | property	1
Number of single-tenant income properties sold | property	2
Net amortization increase (decrease)	$ 3,200
Net increase in intangible assets and liabilities	2,500
Below market lease value	5,543	$ 5,601
Value of In-Place Leases [Member]
Intangible Assets And Liabilities
Increase from acquisitions	3,900
Value of Above Market In-Place Leases [Member]
Intangible Assets And Liabilities
Increase from acquisitions	800
Value of Intangible Leasing Costs [Member]
Intangible Assets And Liabilities
Increase from acquisitions	1,200
Value of Below Market In-Place Leases
Intangible Assets And Liabilities
Increase from acquisitions	$ 200