Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation (Narrative) (Details)

v3.7.0.1
Stock-Based Compensation (Narrative) (Details) - USD ($)
1 Months Ended 3 Months Ended 4 Months Ended 60 Months Ended
Aug. 31, 2011
Mar. 31, 2017
Mar. 31, 2016
Dec. 31, 2011
Dec. 31, 2016
May 19, 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Number of options outstanding   1,111,334     922,930  
Aggregate intrinsic value of options outstanding   $ 0        
Intrinsic value of all options exercised   0        
Net cash proceeds from exercise of stock options   0 $ 0      
Share based compensation expense before income taxes   93,018 279,642      
Share based compensation expense after income taxes   60,000 182,000      
Unrecognized compensation expense for awards   $ 691,000        
Recognition period for unrecognized compensation expense   2 years 6 months        
Excess tax benefits from the exercise of stock options and issuance of stock   $ 0 $ (23,000)      
2011 Executive Incentive Compensation Plan [Member]            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Number of awards authorized           2,000,000
Shares issued under Plan   146,047        
Number of options outstanding   1,270,851        
Awards eligible for grant   583,102        
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   63,000        
1992 Stock Plan [Member]            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Shares available   10,230        
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   70,709        
Key Employees [Member] | 2011 Executive Incentive Compensation Plan [Member]            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Deferred stock awards granted   90,954        
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   208,186        
Award expiration period   7 years