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Quarterly Financial Information
12 Months Ended
Dec. 31, 2011
Quarterly Financial Information [Abstract]  
Quarterly Financial Information
14. Quarterly Financial Information (Unaudited)

(in thousands, except per share amounts and market price per share)

                                 
     First
Quarter
    Second
Quarter
     Third
Quarter
     Fourth
Quarter
 

Year ended December 31, 2011

                                  

Revenues

   $ 68,769      $ 76,013       $ 85,384       $ 84,708   

Cost of revenues

     63,171        62,732         69,231         86,288   

Net (loss) income

     5,546        3,449         5,414         (96

Basic (loss) earnings per share

     .54        .34         .54         (.01

Diluted (loss) earnings per share

     .54        .34         .54         (.01

Common stock market prices:

                                  

Year ended December 31, 2010

                                  

Revenues

   $ 58,260      $ 67,432       $ 73,876       $ 73,555   

Cost of revenues

     52,895        55,700         59,832         59,956   

Net (loss) income

     (1,703     2,259         3,669         3,128   

Basic (loss) earnings per share

     (.16     .22         .36         .31   

Diluted (loss) earnings per share

     (.16     .22         .36         .30   

Common stock market prices: