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Stockholders' Equity (Changes in Non-vested Stock Options) (Details) - Stock Options [Member] - $ / shares
shares in Thousands
3 Months Ended 9 Months Ended
Jun. 30, 2025
Jun. 30, 2025
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]    
Number of Options, Beginning balance 501 898
Granted, Number of options   41
Vested, Number of options (19) (453)
Forfeited, Number of options (2) (6)
Number of Options, Ending balance 480 480
Weighted-Average Grant Date Fair Value Per Share, Beginning balance $ 43.35 $ 37.3
Granted, Weighted-Average Grant Date Fair Value Per Share   83.65
Vested, Weighted-Average Grant Date Fair Value Per Share 39.51 34.82
Forfeited, Weighted-Average Grant Date Fair Value Per Share 35.64 40.88
Weighted-Average Grant Date Fair Value Per Share, Ending balance $ 43.53 $ 43.53