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A summary of nonvested option activity during 2012 is presented below: 

Additional information about stock options exercised is presented below: 

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As of December 31, 2012, there was $54,000 of total unrecognized compensation cost related to outstanding unvested options that will be recognized over the following periods: 

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The value of the 8,600 shares of restricted common stock awarded during 2011 was based on a stock price of $16.25 per share on the date such shares were granted. These awards vest ratably over four years. As of December 31, 2012, there was $82,000 of total unrecognized compensation cost related to outstanding unvested restricted shares that will be recognized over the following periods: 

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