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(6) Earnings Per Share (Tables)
6 Months Ended
Jun. 30, 2021
Earnings per share:  
Computation of earnings per share
               
   Three Months Ended   Six Months Ended
   June 30,   June 30,
   2021   2020   2021   2020
   (In thousands)   (In thousands)

Weighted average number of common shares outstanding during the period used to compute basic earnings per share

   22,842    22,685    22,791   22,612
                    

Incremental common shares attributable to exercise of outstanding options and warrants

   2,288    1,002    2,257   1,171
                    

Weighted average number of common shares used to compute diluted earnings per share

   25,130    23,687    25,048   23,783