Share-Based Compensation (Nonvested Share Activity) (Details)	6 Months Ended
	Mar. 31, 2023 $ / shares shares
Shares
Unvested at beginning of period | shares	1,042,000
Granted (shares) | shares	7,000
Vested (shares) | shares	(564,000)
Forfeited (shares) | shares	(8,000)
Unvested at end of period | shares	477,000
Weighted Average Grant Date Fair Value/Share
Weighted average grant date fair value, nonvested, beginning balance (in dollars per share) | $ / shares	$ 6.82
Weighted average grant date fair value, granted (in dollars per share) | $ / shares	21.39
Weighted average grant date fair value, vested (in dollars per share) | $ / shares	5.93
Weighted average grant date fair value, forfeited (in dollars per share) | $ / shares	7.95
Weighted average grant date fair value, nonvested, ending balance (in dollars per share) | $ / shares	$ 8.21