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Stock-Based Compensation - Additional Information (Details) - USD ($)
3 Months Ended 9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
Options granted (in shares)     0 0
RSU's        
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
Weighted average expected period over which the expense is to be recognized     8 months 12 days  
Stock-based compensation expense, recognition period     3 years  
Unamortized compensation cost, net of expected forfeitures $ 400,000   $ 400,000  
Fair value granted 500,000   500,000  
Options Outstanding to Purchase Common Stock        
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
Unamortized compensation cost, net of expected forfeitures 100,000   $ 100,000  
Weighted average expected period over which the expense is to be recognized     10 months 24 days  
Tax benefits associated with exercise of stock options $ 0 $ 0 $ 0 $ 0
Exercise of warrants, shares     0 0
Equity Incentive Plan 2010        
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
Outstanding awards 94,224   94,224  
Stock Incentive Plan 2019        
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
Number of shares reserved for issuance 182,500   182,500  
Stock Incentive Plan 2019 | Options Outstanding to Purchase Common Stock        
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
Maximum annual option grants or other awards to the entity's non-employee directors (in shares) 2,000   2,000  
Maximum one-time grant of an option or other awards to the entity's non employee directors (in shares)     6,000  
Minimum percentage of voting rights required for applicability of a specific expiration term 10.00%   10.00%  
Maximum expiration term of options granted     5 years  
Term of plan     10 years  
Stock Incentive Plan 2019 | Options Outstanding to Purchase Common Stock | Minimum        
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
Vesting period of replacement options     3 years  
Stock Incentive Plan 2019 | Options Outstanding to Purchase Common Stock | Maximum        
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
Vesting period of replacement options     4 years