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ASSETS HELD FOR SALE ASSETS HELD FOR SALE - Schedule for asset acquisition (Details)
$ in Millions
1 Months Ended 12 Months Ended
Nov. 30, 2018
segment
Dec. 31, 2016
USD ($)
building
Dec. 31, 2019
Dec. 31, 2019
segment
Property, Plant and Equipment [Line Items]        
Number of reportable segments 1   3 3
Two Office Buildings In Charlotte, NC        
Property, Plant and Equipment [Line Items]        
Number Of Office Buildings Acquired | building   2    
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment   $ 23.5    
Acquisition Costs, Period Cost   $ 0.1