Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands	Total	Common Stock [Member]	Additional Paid-In Capital [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	(Accumulated Deficit) Retained Earnings [Member]
Beginning Balance at Sep. 30, 2021	$ 399,429	$ 202	$ 351,033	$ (382)	$ 48,576
Beginning Balance, Shares at Sep. 30, 2021		20,238,000
Exercise of stock options	10,409	$ 2	10,407
Exercise of stock options, Shares		248,000
Vesting of restricted stock units, net of withholding	(777)	$ 1	(778)
Vesting of restricted stock units, net of withholding, Shares		20,000
Stock-based compensation expense	6,062		6,062
Other comprehensive (loss) income	(624)			(624)
Net loss	(30,115)				(30,115)
Ending Balance at Dec. 31, 2021	384,384	$ 205	366,724	(1,006)	18,461
Ending Balance, Shares at Dec. 31, 2021		20,506,000
Beginning Balance at Sep. 30, 2021	399,429	$ 202	351,033	(382)	48,576
Beginning Balance, Shares at Sep. 30, 2021		20,238,000
Other comprehensive (loss) income	(3,238)
Net loss	(95,407)
Ending Balance at Jun. 30, 2022	$ 338,023	$ 207	388,267	(3,620)	(46,831)
Ending Balance, Shares at Jun. 30, 2022	20,720,000
Beginning Balance at Sep. 30, 2021	$ 399,429	$ 202	351,033	(382)	48,576
Beginning Balance, Shares at Sep. 30, 2021		20,238,000
Net loss	(121,755)
Ending Balance at Sep. 30, 2022	321,334	$ 208	398,029	(3,724)	(73,179)
Ending Balance, Shares at Sep. 30, 2022		20,791,000
Beginning Balance at Dec. 31, 2021	384,384	$ 205	366,724	(1,006)	18,461
Beginning Balance, Shares at Dec. 31, 2021		20,506,000
Exercise of stock options	3,802	$ 1	3,801
Exercise of stock options, Shares		97,000
Vesting of restricted stock units, net of withholding	(451)		(451)
Vesting of restricted stock units, net of withholding, Shares		15,000
Stock-based compensation expense	6,471		6,471
Other comprehensive (loss) income	(2,031)			(2,031)
Net loss	(33,592)				(33,592)
Ending Balance at Mar. 31, 2022	358,583	$ 206	376,545	(3,037)	(15,131)
Ending Balance, Shares at Mar. 31, 2022		20,618,000
Exercise of stock options	4,120	$ 1	4,119
Exercise of stock options, Shares		102,000
Stock-based compensation expense	7,603		7,603
Other comprehensive (loss) income	(583)			(583)
Net loss	(31,700)				(31,700)
Ending Balance at Jun. 30, 2022	$ 338,023	$ 207	388,267	(3,620)	(46,831)
Ending Balance, Shares at Jun. 30, 2022	20,720,000
Beginning Balance at Sep. 30, 2022	$ 321,334	$ 208	398,029	(3,724)	(73,179)
Beginning Balance, Shares at Sep. 30, 2022		20,791,000
Exercise of stock options	1,126	$ 1	1,125
Exercise of stock options, Shares		56,000
Vesting of restricted stock units, net of withholding	(825)		(825)
Vesting of restricted stock units, net of withholding, Shares		37,000
Stock-based compensation expense	7,139		7,139
Other comprehensive (loss) income	1,049			1,049
Net loss	(28,986)				(28,986)
Ending Balance at Dec. 31, 2022	300,837	$ 209	405,468	(2,675)	(102,165)
Ending Balance, Shares at Dec. 31, 2022		20,884,000
Beginning Balance at Sep. 30, 2022	$ 321,334	$ 208	398,029	(3,724)	(73,179)
Beginning Balance, Shares at Sep. 30, 2022		20,791,000
Exercise of stock options, Shares	124,000
Ending Balance at Mar. 31, 2023	$ 269,375	$ 210	410,803	(1,815)	(139,823)
Ending Balance, Shares at Mar. 31, 2023		21,049,000
Beginning Balance at Sep. 30, 2022	321,334	$ 208	398,029	(3,724)	(73,179)
Beginning Balance, Shares at Sep. 30, 2022		20,791,000
Other comprehensive (loss) income	2,220
Net loss	(105,709)
Ending Balance at Jun. 30, 2023	237,819	$ 210	418,001	(1,504)	(178,888)
Ending Balance, Shares at Jun. 30, 2023		21,056,000
Beginning Balance at Dec. 31, 2022	300,837	$ 209	405,468	(2,675)	(102,165)
Beginning Balance, Shares at Dec. 31, 2022		20,884,000
Exercise of stock options	882	$ 1	881
Exercise of stock options, Shares		61,000
Vesting of restricted stock units, net of withholding	(2,909)		(2,909)
Vesting of restricted stock units, net of withholding, Shares		104,000
Stock-based compensation expense	7,363		7,363
Other comprehensive (loss) income	860			860
Net loss	(37,658)				(37,658)
Ending Balance at Mar. 31, 2023	269,375	$ 210	410,803	(1,815)	(139,823)
Ending Balance, Shares at Mar. 31, 2023		21,049,000
Exercise of stock options	200		200
Exercise of stock options, Shares		7,000
Stock-based compensation expense	6,998		6,998
Other comprehensive (loss) income	311			311
Net loss	(39,065)				(39,065)
Ending Balance at Jun. 30, 2023	$ 237,819	$ 210	$ 418,001	$ (1,504)	$ (178,888)
Ending Balance, Shares at Jun. 30, 2023		21,056,000