Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	1 Months Ended	12 Months Ended
	Dec. 31, 2022	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2021
Basic earnings per common share:
Net Income - Basic		$ 38,463	$ 50,160	$ 8,612
Weighted shares outstanding - Basic		55,586	56,498	55,744
Earnings per common share (in dollars per share)		$ 0.69	$ 0.89	$ 0.15
Diluted earnings per common share:
Net Income - Basic		$ 38,463	$ 50,160	$ 8,612
Add: Convertible Notes interest expense, net of tax		4,327	7,489	0
Net Income - Diluted		$ 42,790	$ 57,649	$ 8,612
Weighted shares outstanding - basic (in shares)		55,586	56,498	55,744
Equity-based compensation awards - effect of dilution (in shares)		1,482	678	205
Convertible Notes - effect of dilution (in shares)		23,797	25,224	0
Weighted Shares Outstanding - Diluted (in shares)		80,865	82,400	55,949
Diluted earnings per common share (in dollars per share)		$ 0.53	$ 0.70	$ 0.15
Potential common shares excluded from the calculation of diluted earnings per share above, restricted stock (in shares)		6,397	1,975	1,233
Gain on extinguishment of debt	$ (3,500)	$ (3,545)	$ 0	$ 0
2025 Convertible Notes
Diluted earnings per common share:
Gain on extinguishment of debt		$ 5,400
Convertible Debt Securities
Diluted earnings per common share:
Potential common shares excluded from the calculation of diluted earnings per share above, restricted stock (in shares)		5,596	0	0
Restricted stock
Diluted earnings per common share:
Potential common shares excluded from the calculation of diluted earnings per share above, restricted stock (in shares)		801	1,975	1,233