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Stockholders' Equity - Stock Awards (Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Restricted Stock    
Number of Other than Options    
Outstanding, beginning balance (in shares) 780,833  
Granted (in shares) 0  
Canceled (in shares) 0  
Vested (in shares) 0  
Expired/Forfeited (in shares) 0  
Outstanding, ending balance (in shares) 780,833  
Weighted Average Exercise Price    
Outstanding, beginning balance (in dollars per share) $ 4.09  
Granted (in dollars per share) 0.00  
Canceled (in dollars per share) 0.00  
Vested (in dollars per share) 0.00  
Expired/Forfeited (in dollars per share) 0.00  
Outstanding, ending balance (in dollars per share) $ 4.09  
Other disclosures    
Compensation expense $ 10 $ 23
Unrecognized compensation expense 0  
Management Stock Bonus    
Other disclosures    
Compensation expense $ (8)