XML 52 R41.htm IDEA: XBRL DOCUMENT v2.4.0.6
Stock-Based Compensation (Details) (USD $)
3 Months Ended 6 Months Ended
Jun. 30, 2012
Jun. 30, 2011
Jun. 30, 2012
Jun. 30, 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Approved and authorized maximum number of shares to be issued 3,000,000   3,000,000  
Compensation expense related to stock based awards outstanding $ 753,000 $ 487,000 $ 1,500,000 $ 1,100,000
Company granted options to purchase, shares     262,051  
Weighted average fair value of options granted     $ 4.08  
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions and Methodology [Abstract]        
Exercise of stock options, shares 0 30,691 2,226 30,691
Proceeds received upon exercise of stock options   $ 182,000 $ 13,000 $ 182,000
Stock Options [Member]
       
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Options, expiration period     10 years  
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions and Methodology [Abstract]        
General option terms     6 years 2 months 12 days  
Expected volatility     68.50%  
Risk-free interest rate     1.42%  
Dividend yield     0.00%  
Forfeiture rate applied to options     5.50%  
Stock Options [Member] | Minimum [Member]
       
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Options, vesting period     3 years  
Stock Options [Member] | Maximum [Member]
       
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Options, vesting period     5 years