Annual report pursuant to Section 13 and 15(d)

OTHER ASSETS - Narrative (Details)

v3.20.4
OTHER ASSETS - Narrative (Details) - USD ($)
$ in Millions
12 Months Ended
Mar. 31, 2020
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Customer in-place leases        
Finite-Lived Intangible Assets [Line Items]        
Amortization expense   $ 9.0 $ 11.3 $ 11.6
Estimated useful life   12 months    
Management contract        
Finite-Lived Intangible Assets [Line Items]        
Amortization expense   $ 1.0 0.7 $ 0.7
Estimated useful life 15 years 15 years    
Tenant reinsurance intangible        
Finite-Lived Intangible Assets [Line Items]        
Amortization expense   $ 0.6 $ 0.3