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SUBSEQUENT EVENTS (Details) - Subsequent Event - Schuylkill Yards West
ft² in Thousands, $ in Millions
Feb. 02, 2021
USD ($)
ft²
Subsequent Event [Line Items]  
Area of building to be constructed | ft² 570
Estimated project cost $ 287
Funding committed by other party $ 58
Ownership interest held by partner 45.00%