Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation (Narrative) (Details)

v3.20.2
Stock-Based Compensation (Narrative) (Details) - USD ($)
9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Dec. 31, 2019
May 19, 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Number of options outstanding 1,235,404   1,130,472  
Aggregate intrinsic value of options outstanding $ 193,000      
Intrinsic value of all options exercised 18,000      
Net cash proceeds from exercise of stock options 0 $ 0    
Share based compensation expense before income taxes 320,000 276,000    
Share based compensation expense after income taxes 253,000 $ 218,000    
Unrecognized compensation expense for awards $ 662,000      
Recognition period for unrecognized compensation expense 2 years 7 months 6 days      
2011 Executive Incentive Compensation Plan [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Number of awards authorized       2,500,000
Shares issued under Plan 429,432      
Number of options outstanding 1,509,623      
Awards eligible for grant 560,945      
Employee Stock Purchase Plan [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Percentage of price of common stock at which employees are able to acquire 85.00%      
Shares available 76,154