Stock-Based Compensation (Options and Common Shares Reserved for Grant) (Details) - Stock Options $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Dec. 31, 2023 USD ($) $ / shares shares
Options Outstanding [Roll Forward]
Options Outstanding, Beginning Balance (in shares) | shares	1,553
Options Outstanding, Granted (in shares) | shares	87
Options Outstanding, Exercised (in shares) | shares	(19)
Options Outstanding, Forfeited / Canceled (in shares) | shares	(10)
Options Outstanding, Ending Balance (in shares) | shares	1,611
Options Outstanding, Exercisable (in shares) | shares	1,137
Weighted Average Exercise Price [Roll Forward]
Weighted Average Exercise Price, Beginning Balance	$ 18.52
Weighted Average Exercise Price, Granted	24.58
Weighted Average Exercise Price, Exercised	24.04
Weighted Average Exercise Price, Forfeited / Canceled	23.17
Weighted Average Exercise Price, Ending Balance	18.89
Weighted Average Exercise Price, Exercisable	$ 16.89
Weighted Average Remaining Contractual Term [Abstract]
Weighted Average Remaining Contractual Term, Outstanding	3 years 9 months 18 days
Weighted Average Remaining Contractual Term, Exercisable	3 years 3 months 18 days
Aggregate Intrinsic Value, Outstanding | $	$ 12,533	[1]
Aggregate Intrinsic Value, Exercisable | $	$ 10,656	[1]
Closing Stock Price	$ 26.00

[1] The aggregate intrinsic value represents the total pre-tax intrinsic value, based on our closing stock price of $26.00 as of December 31, 2023, which would have been received by the option holders had all option holders exercised their options as of that date. The intrinsic value of an option is the amount by which the fair value of the underlying stock exceeds its exercise price.