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7. Earnings Per Share (Tables)
3 Months Ended
Mar. 31, 2014
Income per share:  
Computation of basic and diluted earnings per share
   Three Months Ended 
   March 31, 
   2014   2013 
   (In thousands) 
Weighted average number of common shares outstanding during the period used to compute basic earnings per share   24,355    20,073 
           
Incremental common shares attributable to exercise of outstanding options and warrants   7,656    11,551 
           
Weighted average number of common shares used to compute diluted earnings per share   32,011    31,624