Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation (Narrative) (Details)

v3.19.1
Stock-Based Compensation (Narrative) (Details) - USD ($)
1 Months Ended 3 Months Ended 4 Months Ended 84 Months Ended
Aug. 31, 2011
Mar. 31, 2019
Mar. 31, 2018
Dec. 31, 2011
Dec. 31, 2018
May 19, 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Number of options outstanding   1,311,090     1,380,492  
Aggregate intrinsic value of options outstanding   $ 7,000        
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   70,000 85,000      
Share based compensation expense after income taxes   55,000 $ 67,000      
Unrecognized compensation expense for awards   $ 582,000        
Recognition period for unrecognized compensation expense   2 years 9 months 18 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   213,130        
Number of options outstanding   1,649,926        
Awards eligible for grant   636,944        
2011 Executive Incentive Compensation Plan [Member] | Share-based Compensation Award, 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   36,000        
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   10,170        
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        
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   50,769        
Award expiration period   7 years