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Earnings Per Share (Schedule Of Earnings Per Share, Basic And Diluted) (Details) - shares
shares in Thousands
3 Months Ended
Sep. 30, 2021
Mar. 31, 2021
Sep. 30, 2020
Earnings Per Share [Abstract]      
Basic shares 6,834 6,834 7,702
Stock options   163 72
Non-vested restricted stock units and restricted shares   93 134
Potential common shares, total   256 206
Diluted shares 7,090 7,090 7,908
Anti-dilutive shares   16 200