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Stock-Based Compensation -Additional Information (Details) - USD ($)
3 Months Ended 6 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2020
Jun. 30, 2019
May 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Stock-based compensation expense $ 69,000 $ 123,000 $ 150,000 $ 219,000  
Incentive Plan          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Number of shares originally reserved (in shares)         5,600,676
Number of shares available for grant (in shares) 2,284,333   2,284,333    
Incentive Plan | Stock Options          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Award vesting period     10 years    
Award service period (in years)     4 years    
Unrecognized compensation costs $ 0   $ 0    
Incentive Plan | Restricted Stock Units (RSUs)          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Unrecognized compensation cost $ 208,000   $ 208,000    
Unrecognized compensation cost, period of recognition (in years)     1 year 3 months 26 days    
Incentive Plan | Restricted Stock Units (RSUs) | Minimum          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Award vesting period     2 years    
Incentive Plan | Restricted Stock Units (RSUs) | Maximum          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Award vesting period     4 years    
Incentive Plan | Restricted Stock          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Fair value of stock vested     $ 190,000    
Incentive Plan | Second Anniversary of Award Date | Stock Options          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Percent of options vesting 50.00%   50.00%    
Incentive Plan | Third Anniversary of Award Date | Stock Options          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Percent of options vesting 25.00%   25.00%    
Incentive Plan | Fourth Anniversary of Award Date | Stock Options          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Percent of options vesting 25.00%   25.00%    
2019 Executive Performance RSU Award Agreement | Restricted Stock Units (RSUs)          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Award vesting period     3 years    
Required operating income     $ 1,000,000    
Period before vesting begins     1 year    
Deferred Plan | Deferred Compensation          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Stock-based compensation expense     $ 0 $ 0