Condensed Consolidated Statements of Stockholders’ Equity (unaudited) - USD ($) shares in Thousands, $ in Thousands	Total	Common stock	Additional paid-in capital	Accumulated Other comprehensive loss	Accumulated deficit
Beginning balance (in shares) at Sep. 30, 2021		49,499
Beginning balance at Sep. 30, 2021	$ 580,821	$ 0	$ 1,190,828	$ 546	$ (610,553)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Vesting of restricted stock units (in shares)		62
Exercise of stock options (in shares)		270
Exercise of stock options	3,039		3,039
Issuance of shares associated with a business acquisition (in shares)		928
Issuance of shares associated with a business acquisition	72,514		72,514
Repurchases of common stock for income tax withholding (in shares)		(24)
Repurchases of common stock for income tax withholding	(2,558)		(2,558)
Stock-based compensation	18,108		18,108
Other comprehensive income (loss)	(183)			(183)
Net loss	(45,563)				(45,563)
Ending balance (in shares) at Dec. 31, 2021		50,735
Ending balance at Dec. 31, 2021	$ 626,178	$ 0	1,281,931	363	(656,116)
Beginning balance (in shares) at Sep. 30, 2022	56,523	56,523
Beginning balance at Sep. 30, 2022	$ 789,385	$ 0	1,619,644	(1,843)	(828,416)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Vesting of restricted stock units (in shares)		124
Exercise of stock options (in shares)	35	35
Exercise of stock options	$ 603		603
Issuance of shares associated with a business acquisition (in shares)		1
Issuance of shares associated with a business acquisition	0		0
Repurchases of common stock for income tax withholding (in shares)		(38)
Repurchases of common stock for income tax withholding	(999)		(999)
Stock-based compensation	(2,074)		(2,074)
Other comprehensive income (loss)	1,234			1,234
Net loss	$ (41,824)				(41,824)
Ending balance (in shares) at Dec. 31, 2022	56,645	56,645
Ending balance at Dec. 31, 2022	$ 746,325	$ 0	$ 1,617,174	$ (609)	$ (870,240)