Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation (Narrative) (Details)

v2.4.0.8
Stock-Based Compensation (Narrative) (Details) (USD $)
9 Months Ended 12 Months Ended 9 Months Ended 3 Months Ended 9 Months Ended
Sep. 30, 2013
Sep. 30, 2012
Sep. 30, 2013
Employee Stock Purchase Plan [Member]
Sep. 30, 2013
2011 Executive Incentive Compensation Plan [Member]
Sep. 30, 2013
Stock Option Plan For Directors [Member]
Dec. 31, 2012
Stock Option Plan For Directors [Member]
Sep. 30, 2013
1992 Stock Plan [Member]
Sep. 30, 2013
Key Employees [Member]
2011 Executive Incentive Compensation Plan [Member]
Sep. 30, 2013
Key Executive Employees [Member]
2011 Executive Incentive Compensation Plan [Member]
Sep. 30, 2013
Deferred Stock [Member]
Sep. 30, 2013
Restricted Stock Units (RSUs) [Member]
Sep. 30, 2013
Restricted Stock Units (RSUs) [Member]
2011 Executive Incentive Compensation Plan [Member]
Sep. 30, 2013
Restricted Stock Units (RSUs) [Member]
2011 Executive Incentive Compensation Plan [Member]
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Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                          
Percentage of price of common stock at which employees are able to acquire     90.00%                    
Shares available     38,856 568,711     136,009            
Number of awards authorized       1,000,000                  
Number of options granted         0 0 0   169,550        
Award expiration period         10 years       7 years        
Award vesting percentage       25.00%                  
Awards granted                   217,654 29,290 28,280  
Deferred stock awards granted       11,576     0 202,078          
Minimum percentage of revenue growth required to earn deferred stock       150.00%                  
Number of non-employee directors to receive restricted stock units                         7
Value of restricted stock units granted for each non-employee director                       $ 40,000  
Award vesting period                         1 year
Aggregate intrinsic value of options outstanding 213,000                        
Net cash proceeds from exercise of stock options 110,000 86,000                      
Intrinsic value of all options exercised 38,000                        
Share based compensation expense before income taxes 8,000 367,000                      
Share based compensation expense after income taxes 5,000 238,000                      
Unrecognized compensation expense related to deferred stock shares 621,000                        
Excess tax benefits from exercise of stock options $ 14,000 $ 68,000