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Net Income per Common Share (Narrative) (Details) - shares
3 Months Ended 6 Months Ended
Jun. 30, 2024
Jun. 30, 2023
Jun. 30, 2022
Jun. 30, 2024
Jun. 30, 2023
Jun. 30, 2022
Net Income per Common Share [Abstract]            
Anti-dilutive outstanding options 896,000 588,000 0 888,000 6,600 0