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Stock-Based Compensation - Narrative (Details) - USD ($)
$ in Thousands
9 Months Ended
Apr. 28, 2020
Sep. 30, 2021
Sep. 30, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Total share based compensation cost   $ 2,135  
Compensation expense recognized for restricted shares   672 $ 482
Unrecognized compensation costs   $ 855 $ 864
2010 Plan      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Shares not issued (in shares) 215,513    
2010 Plan | Restricted Stock      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Grants during the period (in shares)   184,487  
2020 Plan      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Number of shares of common stock reserved for issuance (in shares)   400,000  
2020 Plan | Restricted Stock      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Grants during the period (in shares)   40,189