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STOCKHOLDERS' EQUITY, Restricted Stock and Stock Options (Details)
$ / shares in Units, $ in Thousands
12 Months Ended
Aug. 07, 2020
Director
shares
Feb. 20, 2020
Dec. 31, 2020
USD ($)
Plan
$ / shares
shares
Dec. 31, 2019
USD ($)
$ / shares
shares
Dec. 31, 2018
USD ($)
$ / shares
shares
Dec. 31, 2017
USD ($)
$ / shares
shares
Jun. 16, 2020
shares
Stockholders' Equity Note Details [Abstract]              
Number of stock incentive plans | Plan     3        
Shares [Abstract]              
Outstanding, beginning balance (in shares)     116,000 139,000 167,667    
Canceled (in shares)     (35,000) (23,000) (28,667)    
Outstanding, ending balance (in shares)     81,000 116,000 139,000 167,667  
Vested (in shares)     81,000        
Exercisable, ending balance (in shares)     81,000        
Weighted Average Exercise Price Per Share [Abstract]              
Outstanding, beginning balance (in dollars per share) | $ / shares     $ 10.56 $ 12.14 $ 12.11    
Canceled (in dollars per share) | $ / shares     16.95 20.15 11.98    
Outstanding, ending balance (in dollars per share) | $ / shares     7.79 $ 10.56 $ 12.14 $ 12.11  
Vested (in dollars per share) | $ / shares     7.79        
Exercisable, ending balance (in dollars per share) | $ / shares     $ 7.79        
Weighted Average Remaining Contractual Term [Abstract]              
Outstanding, balance     1 year 2 months 1 day 1 year 9 months 29 days 2 years 6 months 11 days 2 years 11 months 19 days  
Vested     1 year 2 months 1 day        
Exercisable, ending balance     1 year 2 months 1 day        
Aggregate Intrinsic Value [Abstract]              
Outstanding, beginning balance | $     $ 0 $ 0 $ 0    
Cancelled | $       0 0    
Outstanding, ending balance | $     0 $ 0 $ 0 $ 0  
Vested | $     0        
Exercisable, ending balance | $     $ 0        
First Anniversary Date [Member]              
Stockholders' Equity Note Details [Abstract]              
Percentage of vesting of performance-based shares   20.00%          
Second Anniversary Date [Member]              
Stockholders' Equity Note Details [Abstract]              
Percentage of vesting of performance-based shares   30.00%          
Third Anniversary Date [Member]              
Stockholders' Equity Note Details [Abstract]              
Percentage of vesting of performance-based shares   50.00%          
Restricted Stock [Member]              
Stockholders' Equity Note Details [Abstract]              
Restricted shares granted to each director (in shares) 17,096            
Shares [Abstract]              
Nonvested restricted stock outstanding, beginning balance (in shares)     595,436 35,908      
Granted (in shares)     1,319,734 598,982      
Cancelled (in shares)     0 (3,546)      
Vested (in shares)     (343,011) (35,908)      
Nonvested restricted stock outstanding, ending balance (in shares)     1,572,159 595,436 35,908    
Weighted Average Grant Date Fair Value [Abstract]              
Nonvested restricted stock outstanding, beginning balance (in dollars per share) | $ / shares     $ 3.15 $ 2.23      
Granted (in dollars per share) | $ / shares     2.68 3.15      
Cancelled (in dollars per share) | $ / shares     0 3.17      
Vested (in dollars per share) | $ / shares     3.40 2.23      
Nonvested restricted stock outstanding, ending balance (in dollars per share) | $ / shares     $ 2.77 $ 3.15 $ 2.23    
Recognized restricted stock expense | $     $ 1,700 $ 700      
Unrecognized restricted stock expense | $     3,200 1,200      
Stock Options [Member]              
Aggregate Intrinsic Value [Abstract]              
Unrecognized pre-tax compensation expense | $     $ 0        
2020 Plan [Member]              
Stockholders' Equity Note Details [Abstract]              
Number of shares available for issuance under incentive plan (in shares)             2,000,000
2020 Plan [Member] | June 16, 2020 [Member]              
Stockholders' Equity Note Details [Abstract]              
Stock option award issuance, plan duration     10 years        
LTIP Plan [Member]              
Stockholders' Equity Note Details [Abstract]              
Number of shares available for issuance under incentive plan (in shares)             2,000,000
Performance-based restricted stock compensation expense | $     $ 500        
LTIP Plan [Member] | February 28, 2019 [Member]              
Stockholders' Equity Note Details [Abstract]              
Vesting period of performance-based shares     3 years        
LTIP Plan [Member] | Restricted Stock [Member]              
Weighted Average Grant Date Fair Value [Abstract]              
Outstanding restricted shares, intrinsic value | $     $ 10,200        
LTIP Plan [Member] | Restricted Stock [Member] | February 28, 2019 [Member]              
Weighted Average Grant Date Fair Value [Abstract]              
Recognized restricted stock expense | $     $ 500 $ 400      
Non Employee Directors Plan [Member]              
Stockholders' Equity Note Details [Abstract]              
Number of directors appointed | Director 2            
Net share settlement for restricted stock (in shares)     75,115 5,518      
Decrease in equity due to payment of tax for employee | $     $ 200        
Non Employee Directors Plan [Member] | Maximum [Member]              
Stockholders' Equity Note Details [Abstract]              
Decrease in equity due to payment of tax for employee | $       $ 100      
Non Employee Directors Plan [Member] | Restricted Stock [Member]              
Stockholders' Equity Note Details [Abstract]              
Number of shares issued under incentive plan (in shares)     111,376        
Shares [Abstract]              
Vested (in shares) (12,762)