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RELATED-PARTY TRANSACTIONS - Executive Bonus Plan (Details) - Executive Bonus Plan - USD ($)
12 Months Ended
Aug. 06, 2018
Aug. 02, 2018
Dec. 31, 2019
Dec. 31, 2018
Related Party Transaction [Line Items]        
Bonus plan term   5 years    
Multiplication factor   5.00%    
Adjustment factor   100.00%    
Bonus pool as a percentage of adjusted total net gain from assets sold   8.75%    
Percent of bonus pool to be distributed in cash in following year   50.00%    
Percent of bonus pool to be distributed via RSUs   50.00%    
Percent used for RSU award determination 50.00%      
Compensation earned     $ 783,000 $ 0
Ms. Timian-Palmer, CEO        
Related Party Transaction [Line Items]        
Bonus allocation   55.00%    
Mr. Webb, CFO        
Related Party Transaction [Line Items]        
Bonus allocation   45.00%