Stock-Based Compensation (Tables)

12 Months Ended

Sep. 30, 2023

Share-Based Payment Arrangement [Abstract]

Schedule of allocation of share-based compensation costs by plan

Following is a summary of stock-based compensation expense related to stock options and restricted stock awards for the fiscal years ended 2023, 2022 and 2021, respectively.

	Fiscal Year Ended September 30,
in thousands	2023		2022		2021
Stock options expense	$	—	$	1	$	25
Restricted stock awards expense	7,275		8,477		12,142
Stock-based compensation expense	$	7,275	$	8,478	$	12,167

Schedule of assumptions for stock option activity

For the Company and each member of the peer group, the following inputs were used, as applicable, in the Monte Carlo valuation model to determine the fair value as of the grant date for performance-based restricted stock granted in each of the fiscal years ended.

	Fiscal Year Ended September 30,
	2023		2022		2021
Expected volatility range	41.5% - 86.9%		41.0% - 89.0%		26.1% - 67.0%
Risk-free interest rate	4.26	%	0.81	%	0.23	%
Dividend yield	—		—		—
Grant-date stock price range	$10.31 - $93.50		$21.40 - $142.99		$14.07 - $4,318.03

Schedule of stock options activity

Following is a summary of stock option activity for the periods presented:

	Fiscal Year Ended September 30,
	2023			2022			2021
	Shares	Weighted- Average Exercise Price		Shares	Weighted- Average Exercise Price		Shares	Weighted- Average Exercise Price
Outstanding at beginning of period	27,507	$	14.31	114,259	$	17.89	392,465	$	15.47
Granted	100	27.98		236	16.58		—	—
Exercised	(13,796)	19.00		(988)	11.32		(278,206)	14.48
Expired	—	—		(86,000)	19.11		—	—
Forfeited	(236)	16.58		—	—		—	—
Outstanding at end of period	13,575	$	9.61	27,507	$	14.31	114,259	$	17.89
Exercisable at end of period	13,475	$	9.48	27,271	$	14.29	113,309	$	17.95

Schedule of nonvested stock awards and performance shares

Activity relating to all restricted stock awards for the periods presented is as follows:

	Fiscal Year Ended September 30, 2023
	Performance-Based(a)			Time-Based			Total
	Shares	Weighted- Average Grant Date Fair Value		Shares	Weighted- Average Grant Date Fair Value		Shares	Weighted- Average Grant Date Fair Value
Beginning of period	436,146	$	17.76	412,042	$	18.52	848,188	$	18.13
Granted	249,534	14.17		425,398	12.05		674,932	12.83
Vested	(334,736)	16.80		(234,218)	18.02		(568,954)	17.30
Forfeited	(2,721)	15.20		(9,388)	14.38		(12,109)	14.56
End of period	348,223	$	16.20	593,834	$	14.15	942,057	$	14.91

(a) Grant and vesting activity during the fiscal year ended September 30, 2023 include 92,104 shares that were issued above target based on performance level achieved under performance-based restricted stock vesting in the current period.

	Fiscal Year Ended September 30, 2022
	Performance-Based(a)			Time-Based			Total
	Shares	Weighted- Average Grant Date Fair Value		Shares	Weighted- Average Grant Date Fair Value		Shares	Weighted- Average Grant Date Fair Value
Beginning of period	738,155	$	13.45	486,574	$	13.79	1,224,729	$	13.59
Granted	269,617	18.98		246,844	21.40		516,461	20.14
Vested	(552,417)	10.50		(286,182)	13.21		(838,599)	11.42
Forfeited	(19,209)	17.27		(35,194)	16.49		(54,403)	16.77
End of period	436,146	$	17.76	412,042	$	18.52	848,188	$	18.13

(a) Grant and vesting activity during the fiscal year ended September 30, 2022 include 177,759 shares that were issued above target based on performance level achieved under performance-based restricted stock vesting in the current period.

	Fiscal Year Ended September 30, 2021
	Performance-Based(a)			Time-Based			Total
	Shares	Weighted- Average Grant Date Fair Value		Shares	Weighted- Average Grant Date Fair Value		Shares	Weighted- Average Grant Date Fair Value
Beginning of period	796,024	$	14.71	610,130	$	13.85	1,406,154	$	14.34
Granted	164,296	17.90		251,788	14.21		416,084	15.67
Vested	(222,165)	22.40		(346,856)	14.36		(569,021)	17.50
Forfeited	—	—		(28,488)	11.77		(28,488)	11.77
End of period	738,155	$	13.45	486,574	$	13.79	1,224,729	$	13.59

(a) Grant and vesting activity during the fiscal year ended September 30, 2021 include 60,930 shares that were issued above target based on performance level achieved under performance-based restricted stock vesting in the current period.