Quarterly report pursuant to Section 13 or 15(d)

Stock Incentive Plans - Narrative (Details)

v3.21.1
Stock Incentive Plans - Narrative (Details)
$ in Thousands
3 Months Ended
Mar. 31, 2021
USD ($)
contribution
shares
Mar. 31, 2020
USD ($)
shares
May 31, 2016
shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Number of shares authorized (in shares) | shares     2,000,000
Shares available for grant (in shares) | shares   793,000  
Share-based compensation expense | $ $ 2,597 $ 3,078  
Stock Options | Continuing Operations      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Unrecognized share-based compensation, net of estimated forfeitures | $ $ 1,250    
Weighted average period over which unrecognized compensation will be recognized (years) 2 years    
Restricted Stock      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Vesting period (in years) 3 years    
Restricted Stock | Continuing Operations      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Unrecognized share-based compensation, net of estimated forfeitures | $ $ 13,179    
Weighted average period over which unrecognized compensation will be recognized (years) 2 years    
Restricted Stock | Year One      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Vesting period (in years) 1 year    
Vesting percentage 33.33%    
Restricted Stock | Year Two      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Vesting percentage 33.33%    
Restricted Stock | Year Three      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Vesting percentage 33.33%    
Performance Awards      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Measurement period 3 years    
Performance Awards | Continuing Operations      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Unrecognized share-based compensation, net of estimated forfeitures | $ $ 3,652    
Weighted average period over which unrecognized compensation will be recognized (years) 3 years    
Employee Stock Purchase Plan      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Number of shares authorized (in shares) | shares 335,000    
Percentage of shares at market value 90.00%    
Number of lump sum contributions | contribution 2    
Additional shares awarded based on performance (in shares) | shares 0    
Director Restricted Shares      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Number of shares authorized (in shares) | shares 360,000    
Shares available for grant (in shares) | shares 90,000    
Director Restricted Shares | Continuing Operations      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Unrecognized share-based compensation, net of estimated forfeitures | $ $ 256    
Share-based compensation expense | $ $ 328 $ 261