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Stock-based Compensation - Summary of plans (Details) - USD ($)
$ in Thousands
1 Months Ended 3 Months Ended 6 Months Ended
Jul. 25, 2018
Feb. 29, 2020
Feb. 28, 2019
Jan. 31, 2019
Jun. 30, 2020
Mar. 31, 2020
Jun. 30, 2019
Mar. 31, 2019
Jun. 30, 2020
Jun. 30, 2019
Stock-based Compensation                    
Stock based compensation expense related to shares issued for services                 $ 45 $ 52
Stock Options                    
Stock-based Compensation                    
Stock based compensation expense         $ 10   $ 19   $ 10 $ 19
Period of recognition for unrecognized compensation cost                 8 months  
2018 LTIP                    
Stock-based Compensation                    
Contractual term of option awards 10 years                  
Maximum number of shares that can be awarded 1,293,109                  
Aggregate number of shares awarded to date under the plan         630,080       630,080  
Shares available for awards         663,029       663,029  
2018 LTIP | Directors                    
Stock-based Compensation                    
Stock based compensation expense related to shares issued for services           $ 45   $ 52    
2018 LTIP | Directors | Common Stock                    
Stock-based Compensation                    
Shares issued for services   30,930   42,168            
2018 LTIP | Officers and employees | Restricted stock                    
Stock-based Compensation                    
Restricted stock (in shares)   140,218 428,797              
Vesting period of stock award   2 years 2 years              
Stock based compensation expense         $ 90       $ 161  
Unrecognized compensation cost         $ 320       $ 320  
Period of recognition for unrecognized compensation cost                 20 months