Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation (Narrative) (Details)

v3.19.2
Stock-Based Compensation (Narrative) (Details) - USD ($)
1 Months Ended 3 Months Ended 4 Months Ended 6 Months Ended 120 Months Ended
Aug. 31, 2008
Mar. 31, 2019
Dec. 31, 2008
Jun. 30, 2019
Jun. 30, 2018
Dec. 31, 2018
May 19, 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Number of options outstanding       1,334,134   1,380,492  
Aggregate intrinsic value of options outstanding       $ 60,000      
Intrinsic value of all options exercised       $ 0      
Number of options exercised            
Net cash proceeds from exercise of stock options       $ 0 $ 0    
Share based compensation expense before income taxes       188,587 109,783    
Share based compensation expense after income taxes       149,000 $ 87,000    
Unrecognized compensation expense for awards       $ 527,000      
Recognition period for unrecognized compensation expense       2 years 6 months      
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       213,130      
Number of options outstanding       1,681,614      
Awards eligible for grant       605,256      
2011 Executive Incentive Compensation Plan [Member] | Share-based Payment Arrangement, Tranche One [Member]              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Award vesting percentage       25.00%      
Stock Option Plan For Directors [Member]              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Number of options granted 0   0 0   0  
Award expiration period       10 years      
Number of options outstanding       18,000      
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       102,114      
Key Employees [Member] | 2011 Executive Incentive Compensation Plan [Member]              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Deferred stock awards granted   157,907          
Award vesting period   3 years          
Key Executive Employees [Member] | 2011 Executive Incentive Compensation Plan [Member]              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Number of options granted       100,769      
Award expiration period       7 years