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Net Income Per Common Share (Narrative) (Details) - shares
3 Months Ended 9 Months Ended
Sep. 30, 2024
Sep. 30, 2023
Sep. 30, 2024
Sep. 30, 2023
Net Income Per Common Share [Abstract]        
Employee stock options excluded from calculations of diluted net income per share 243,780 150,062 243,780 150,062