Stockholders' Equity (Changes in Non-vested Stock Options) (Details) - Stock Options [Member] - $ / shares shares in Thousands	3 Months Ended	6 Months Ended
	Mar. 31, 2025	Mar. 31, 2025
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of Options, Beginning balance	495	898
Granted, Number of options	38	41
Vested, Number of options	(28)	(434)
Forfeited, Number of options	(4)	(4)
Number of Options, Ending balance	501	501
Weighted-Average Grant Date Fair Value Per Share, Beginning balance	$ 40.62	$ 37.3
Granted, Weighted-Average Grant Date Fair Value Per Share	84.13	83.65
Vested, Weighted-Average Grant Date Fair Value Per Share	50.2	34.62
Forfeited, Weighted-Average Grant Date Fair Value Per Share	44.31	44.31
Weighted-Average Grant Date Fair Value Per Share, Ending balance	$ 43.35	$ 43.35