Stock-Based Compensation (Tables)

9 Months Ended

Jun. 30, 2022

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Summary of stock-based compensation expense

	Three Months Ended June 30,				Nine Months Ended June 30,
	2022		2021		2022		2021
Restricted stock units	$	3,178	$	5,475	$	18,433	$	18,667
Employee stock purchase plan		307		611		1,600		1,610
Total stock-based compensation expense	$	3,485	$	6,086	$	20,033	$	20,277

Restricted Stock Unit Activity

		Time-Based	Stock	Performance-
	Total Units	Units	Grants	Based Units
Nine months ended June 30, 2022	231,696	94,429	49,063	88,204
Nine months ended June 30, 2021	346,172	162,842	14,683	168,647

		Weighted
		Average
		Grant-Date
	Shares	Fair Value
Outstanding at September 30, 2021	1,088,652	$	47.35
Granted	231,696		103.00
Vested	(555,513)		41.50
Forfeited	(223,821)		39.51
Outstanding at June 30, 2022	541,014		93.96