Annual report pursuant to Section 13 and 15(d)

Accounting for Share-Based Payments - Narrative (Details)

v3.22.1
Accounting for Share-Based Payments - Narrative (Details) - USD ($)
12 Months Ended
Nov. 10, 2020
Jun. 30, 2020
Feb. 05, 2020
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2018
Dec. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Shares authorized (in shares)       1,500,000      
Options available (in shares)       900,000      
Compensation expense       $ 800,000 $ 1,800,000    
(Benefit from) provision for income taxes       $ 200,000 $ 200,000    
Exercised (in shares)       13,174 0    
Options exercisable (in shares)       129,163      
Options exercisable, weighted average exercise price (in dollars per share)       $ 13.05      
Share-based compensation expense       $ 799,000 $ 1,791,000    
Nonvested award, cost not yet recognized, period for recognition       1 year 1 month 6 days      
Issuance of shares of common stock from the treasury (in shares)       191,673 194,082    
Non Employee Director              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Issuance of shares of common stock from the treasury (in shares)       22,026 43,603    
Annual cash retainer fees       $ 214,000 $ 345,000    
Board of Directors Chairman              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Issuance of shares of common stock from the treasury (in shares)       20,000      
Restricted Stock | Non Employee Director              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Maximum annual retainer percent       100.00%      
Stock Options              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Exercised (in shares)       13,174 0    
Option exercises, aggregate exercise price       $ 109,324      
Options exercisable (in shares)       129,163 86,531    
Options exercisable, weighted average exercise price (in dollars per share)       $ 13.05 $ 13.77    
Share-based compensation expense       $ 100,000 $ 400,000    
Total unrecognized compensation cost       $ 13,786      
Stock Awards | Share-based Payment Arrangement, Tranche One              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Award vesting rights, percentage 66.66%            
Stock Awards | Share-based Payment Arrangement, Tranche Two              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Award vesting rights, percentage 33.33%            
Performance Shares              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Vesting period       3 years      
Granted, weighted average grant date fair value (in dollars per share)       $ 0.69 $ 13.00    
Options, vested in period, fair value       $ 1,100,000 $ 600,000    
Nonvested award, option, cost not yet recognized, amount       $ 0      
Performance Shares | Minimum              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Award vesting rights, percentage       0.00%      
Performance Shares | Maximum              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Award vesting rights, percentage       150.00%      
Inducement Awards              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Compensation expense       $ 100,000 0    
Total unrecognized compensation cost       $ 200,000      
Nonvested award, cost not yet recognized, period for recognition       2 years 6 months 10 days      
Granted, weighted average grant date fair value (in dollars per share)       $ 6.35      
Options, vested in period, fair value       $ 200,000 0    
Inducement Awards | Share-based Payment Arrangement, Tranche One              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Award vesting rights, percentage       50.00%      
Inducement Awards | Share-based Payment Arrangement, Tranche Two              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Award vesting rights, percentage       50.00%      
Vesting period       3 years      
2011 Plan | Stock Options              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Shares authorized (in shares)       0      
Expected life   10 years 10 years 10 years      
Period after grant date, awards vesting begins       1 year      
2011 Plan | Stock Options | Minimum              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Award vesting rights, percentage       20.00%      
2011 Plan | Stock Options | Maximum              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Award vesting rights, percentage       33.00%      
2005 Stock Awards Plan | Stock Awards              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Share-based compensation expense       $ 400,000 $ 1,000,000    
Total unrecognized compensation cost       $ 200,000      
Nonvested award, cost not yet recognized, period for recognition       2 years 10 months 20 days      
2015 Stock Awards Plan | Stock Awards              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Shares authorized (in shares)       1,500,000   500,000 250,000
Period after grant date, awards vesting begins       1 year      
Expiration period for awards       10 years      
2015 Stock Awards Plan | Stock Awards | Minimum              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Award vesting rights, percentage       20.00%      
2015 Stock Awards Plan | Stock Awards | Maximum              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Award vesting rights, percentage       33.00%