Quarterly report pursuant to Section 13 or 15(d)

DISCONTINUED OPERATIONS -Narrative (Details)

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DISCONTINUED OPERATIONS -Narrative (Details)
ft² in Thousands, $ in Thousands
 3 Months Ended 6 Months Ended 36 Months Ended
Jun. 30, 2022
USD ($)
ft²
Jun. 30, 2021
USD ($)
Jun. 30, 2022
USD ($)
ft²
Jun. 30, 2021
USD ($)
Dec. 31, 2021
USD ($)
ft²
property
Dec. 19, 2019
ft²
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]            
Unrealized loss on real estate held for sale $ 4,440 $ 951 $ 4,440 $ (69)    
Suburban Office Portfolio            
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]            
Area of property (in square feet) | ft²           6,600
Discontinued Operations, Held-for-sale | Suburban Office Portfolio            
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]            
Area of property (in square feet) | ft² 350   350   6,300  
Number of properties sold | property         37  
Sales proceeds         $ 1,000,000  
Unrealized loss on real estate held for sale $ 4,400   $ 4,400