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Compensation Plans
6 Months Ended
Jun. 30, 2011
Compensation Plans [Abstract]  
Compensation Plans
6.  
Compensation Plans
   
The Company recognized stock-based compensation expense of $250 and $525 during the three and six months ended June 30, 2011, respectively, as compared to $220 and $496 in the three and six months ended June 30, 2010, respectively.
   
Compensation expense related to stock options is calculated using the Black Scholes valuation model. Expected volatilities are based on the historical volatility of Double Eagle’s common stock over a period consistent with that of the expected terms of the options. The expected terms of the options are estimated based on factors such as vesting periods, contractual expiration dates, historical trends in the Company’s common stock price and historical exercise behavior. The risk-free rates for periods within the contractual life of the options are based on the yields of U.S. Treasury instruments with terms comparable to the estimated option terms.
   
A summary of stock option activity under the Company’s various stock option plans as of June 30, 2011 and changes during the six months ended June 30, 2011 is presented below:
                                 
                    Weighted-        
                    Average        
            Weighted-     Remaining        
            Average     Contractual     Aggregate  
            Exercise     Term (in     Intrinsic  
    Shares     Price     years)     Value  
Options:
                               
Outstanding at January 1, 2011
    556,339     $ 12.94       4.4          
Granted
    26,659     $ 5.10                  
Exercised
    (1,200 )   $ 4.50                  
Cancelled/expired
    (50,000 )   $ 17.95                  
 
                             
Outstanding at June 30, 2011
    531,798     $ 12.10       3.9     $ 575  
 
                       
 
                               
Exercisable at June 30, 2011
    296,363     $ 13.23       3.4     $ 186  
 
                       
   
The Company measures the fair value of the stock awards based upon the fair market value of its common stock on the date of grant and recognizes the resulting compensation expense ratably over the associated service period, which is generally the vesting term of the stock awards. The Company recognizes these compensation costs net of a forfeiture rate and recognizes the compensation costs for only those shares expected to vest. The Company typically estimates forfeiture rates based on historical experience, while also considering the duration of the vesting term of the award.
   
Nonvested stock awards as of June 30, 2011 and changes during the six months ended June 30, 2011 were as follows:
                 
            Weighted-  
            Average  
            Grant Date  
    Shares     Fair Value  
Stock Awards:
               
Outstanding at January 1, 2011
    83,304     $ 8.40  
Granted
    15,279     $ 5.73  
Vested
    (38,923 )   $ 4.76  
Forfeited/returned
        $  
 
             
Nonvested at June 30, 2011
    59,660     $ 10.10  
 
             
   
As part of the acquisition of Petrosearch in 2009, the Company assumed all outstanding warrants to purchase common stock that had been issued by Petrosearch prior to the merger. At June 30, 2011, the Company had 8,660 warrants with an exercise price of $21.25 that expire December 2011. The warrants had no intrinsic value at June 30, 2011.