Stock-Based Compensation Plans
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Sep. 30, 2013
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Disclosure of Compensation Related Costs, Share-based Payments [Abstract] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Disclosure of Compensation Related Costs, Share-based Payments [Text Block] | 8. Stock-Based Compensation Plans During the three and nine months ended September 30, 2013, the Company recognized approximately $315,000 and $948,000, respectively, of compensation expense associated with stock option and restricted stock awards granted in years 2009 through 2012. During the three and nine months ended September 30, 2012, the Company recognized approximately $298,000 and $896,000, respectively, of compensation expense associated with stock option and restricted stock awards granted in years 2008 through 2011. The following table summarizes the Company’s stock option activity for the nine-month period ended September 30, 2013:
* The aggregate intrinsic value of outstanding and exercisable stock options is defined as the difference between the market value of the Company's stock on September 30, 2013, the last trading day of the quarter, of $28.32 and the exercise price multiplied by the number of in-the-money outstanding and exercisable stock options. The following table summarizes stock option activity for the three and nine months ended September 30, 2013 and 2012:
The following table summarizes the Company’s restricted stock activity for the nine-month period ended September 30, 2013:
* The aggregate intrinsic value of non-vested restricted stock was calculated using the market value of the Company's stock on September 30, 2013, the last trading day of the quarter, of $28.32 multiplied by the number of non-vested restricted shares outstanding. |