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(6) Earnings Per Share (Tables)
3 Months Ended
Mar. 31, 2022
Earnings per share:  
Computation of earnings per share
        
   Three Months Ended
   March 31,
   2022   2021
   (In thousands)
Weighted average number of common shares outstanding during the period used to compute basic earnings per share  21,221   22,741
         
Incremental common shares attributable to exercise of outstanding options and warrants  6,976   2,226
         
Weighted average number of common shares used to compute diluted earnings per share  28,197   24,967