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STOCK-BASED COMPENSATION - 2014 MIP (Details) - 2014 MIP Plan - Warrants
$ / shares in Units, $ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2020
USD ($)
$ / shares
shares
Jun. 30, 2019
USD ($)
Jun. 30, 2020
USD ($)
$ / shares
shares
Jun. 30, 2019
USD ($)
Feb. 25, 2020
$ / shares
Dec. 31, 2019
shares
Aug. 07, 2014
item
shares
Stock Awards              
Number of tranches | item             3
Amortization expense | $ $ 0 $ 0 $ 0 $ 0      
Weighted Average Fair Value              
Warrants outstanding | shares 8,557,461   8,557,461     8,557,461  
Exercisable (in dollars per share) | $ / shares $ 281.82   $ 281.82        
Weighted average remaining contractual life, exercisable     1 month 6 days        
Unrecognized compensation cost related to nonvested stock awards              
Unrecognized compensation cost | $ $ 0   $ 0        
$240.89 Warrants              
Stock Awards              
Aggregate number of shares of common stock available for awards | shares             238,066
Exercise price per share, as adjusted by dividends | $ / shares         $ 240.89221    
$267.11 Warrants              
Stock Awards              
Aggregate number of shares of common stock available for awards | shares             246,701
Exercise price per share, as adjusted by dividends | $ / shares         267.11051    
$317.87 Warrants              
Stock Awards              
Aggregate number of shares of common stock available for awards | shares             370,979
Exercise price per share, as adjusted by dividends | $ / shares         $ 317.87359