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(6) Earnings Per Share (Tables)
9 Months Ended
Sep. 30, 2022
Earnings per share:  
Computation of earnings per share
                    
   Three Months Ended   Nine Months Ended 
   September 30,   September 30, 
   2022   2021   2022   2021 
   (In thousands)   (In thousands) 
Weighted average number of common shares outstanding during the period used to compute basic earnings per share   20,911    23,011    21,166    22,866 
                     
Incremental common shares attributable to exercise of outstanding options and warrants   5,743    3,207    6,346    2,573 
                     
Weighted average number of common shares used to compute diluted earnings per share   26,654   26,218    27,512    25,439