Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation (Narrative) (Details)

v3.21.2
Stock-Based Compensation (Narrative) (Details) - USD ($)
6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Aug. 02, 2021
Aug. 01, 2021
Mar. 31, 2021
Dec. 31, 2020
May 19, 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Number of options outstanding 1,069,925         1,173,190  
Aggregate intrinsic value of options outstanding $ 2,129,000            
Intrinsic value of all options exercised 0            
Net cash proceeds from exercise of stock options 0 $ 0          
Share based compensation expense before income taxes 242,000 177,000          
Share based compensation expense after income taxes 191,000 $ 140,000          
Unrecognized compensation expense for awards $ 322,000            
Recognition period for unrecognized compensation expense 2 years 1 month 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 526,913            
Number of options outstanding 1,168,630            
Awards eligible for grant 804,457            
2011 Executive Incentive Compensation Plan [Member] | Subsequent Event [Member]              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Number of options outstanding     0 995,530      
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 59,303            
ESOP [Member]              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Requisite service period 1 year            
Initial award vesting period 2 years            
Award vesting period 6 years            
ESOP contributions $ 329,968            
Shares of ESOP allocated to accounts of eligible employees         72,203    
ESOP [Member] | Share-based Payment Arrangement, Tranche One [Member]              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Award vesting percentage 20.00%