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COMMITMENTS AND CONTINGENCIES (Narrative) (Details) - USD ($)
12 Months Ended
Sep. 29, 2020
Dec. 31, 2021
Dec. 31, 2020
Sep. 30, 2016
Total commitments   $ 763,698,000    
Asset retirement obligation   0 $ 0  
DISTRICT OF COLUMBIA        
Total commitments   177,700,000    
Indemnification Agreement [Member]        
Total commitments   $ 5,600,000    
Lakeway Realty LLC [Member]        
Litigation settlement, amount awarded to other party $ 1,100,000      
Minimum [Member] | Indemnification Agreement [Member]        
Indemnification agreement occurrence period   18 months    
Maximum [Member] | Indemnification Agreement [Member]        
Indemnification agreement occurrence period   72 months    
Equity Method Investment, Nonconsolidated Investee or Group of Investees [Member] | Lakeway Realty LLC [Member]        
Percentage of ownership interest       51.00%