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Stock-Based Compensation (Details) - USD ($)
1 Months Ended 3 Months Ended
Feb. 29, 2020
Mar. 31, 2021
Mar. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Vested shares   0  
RSA      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Retainer fee, percentage 50.00%    
Outstanding vested shares   34,706  
Vesting period 1 year    
Number of shares granted   0  
Compensation costs   $ 17,000 $ 19,000
Compensation cost expected to be recognized   $ 0  
Weighted-average grant date fair value (in dollars per share)   $ 1.75  
RSUs      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Number of shares granted   0  
Compensation costs   $ 145,000 $ 0
Compensation cost expected to be recognized   $ 820,000  
Forfeitures (in shares)   500  
Outstanding RSUs   778,000  
Unrecognized compensation costs, weighted average period   2 years