CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (Unaudited) - USD ($) shares in Thousands, $ in Thousands	Total	Cumulative Effect, Period of Adoption, Adjustment	Common Stock	Additional Paid-in-Capital	Additional Paid-in-Capital Cumulative Effect, Period of Adoption, Adjustment	(Accumulated Deficit) Retained Earnings	(Accumulated Deficit) Retained Earnings Cumulative Effect, Period of Adoption, Adjustment	Accumulated Other Comprehensive Income (Loss)
Balance at Sep. 30, 2021	$ 1,031,945		$ 381	$ 1,002,353		$ 27,577		$ 1,634
Balance (in shares) at Sep. 30, 2021			38,025
Net (loss) income	18,568					18,568
Other comprehensive income (loss)	(10,717)							(10,717)
Issuance of common stock	34,840		$ 13	34,827
Issuance of common stock, (in shares)			1,425
Stock withheld to cover tax withholdings requirements upon stock vesting	(47,826)		$ (1)	(47,825)
Stock withheld to cover tax withholdings requirements upon stock vesting, (in shares)			(145)
Stock-based compensation	29,376			29,376
Balance at Mar. 31, 2022	1,056,186		$ 393	1,018,731		46,145		(9,083)
Balance (in shares) at Mar. 31, 2022			39,305
Balance at Dec. 31, 2021	1,049,501		$ 392	1,006,205		46,621		(3,717)
Balance (in shares) at Dec. 31, 2021			39,162
Net (loss) income	(476)					(476)
Other comprehensive income (loss)	(5,366)							(5,366)
Issuance of common stock	2,701		$ 1	2,700
Issuance of common stock, (in shares)			144
Stock withheld to cover tax withholdings requirements upon stock vesting	(1,538)			(1,538)
Stock withheld to cover tax withholdings requirements upon stock vesting, (in shares)			(1)
Stock-based compensation	11,364			11,364
Balance at Mar. 31, 2022	1,056,186		$ 393	1,018,731		46,145		(9,083)
Balance (in shares) at Mar. 31, 2022			39,305
Balance at Sep. 30, 2022	$ 712,950	$ (8,530)	$ 394	1,029,542	$ (14,371)	(283,249)	$ 5,841	(33,737)
Balance (in shares) at Sep. 30, 2022			39,430
Accounting Standards Update [Extensible Enumeration]	us-gaap:AccountingStandardsUpdate202006CumulativeEffectPeriodOfAdoptionMember
Net (loss) income	$ (28,247)					(28,247)
Other comprehensive income (loss)	10,364							10,364
Issuance of common stock	4,394		$ 10	4,384
Issuance of common stock, (in shares)			920
Stock withheld to cover tax withholdings requirements upon stock vesting	(4,430)		$ (1)	(4,429)
Stock withheld to cover tax withholdings requirements upon stock vesting, (in shares)			(58)
Stock-based compensation	22,922			22,922
Balance at Mar. 31, 2023	709,423		$ 403	1,038,048		(305,655)		(23,373)
Balance (in shares) at Mar. 31, 2023			40,292
Balance at Dec. 31, 2022	719,851		$ 400	1,023,467		(279,566)		(24,450)
Balance (in shares) at Dec. 31, 2022			40,017
Net (loss) income	(26,089)					(26,089)
Other comprehensive income (loss)	1,077							1,077
Issuance of common stock	2,671		$ 3	2,668
Issuance of common stock, (in shares)			276
Stock withheld to cover tax withholdings requirements upon stock vesting	(1,787)			(1,787)
Stock withheld to cover tax withholdings requirements upon stock vesting, (in shares)			(1)
Stock-based compensation	13,700			13,700
Balance at Mar. 31, 2023	$ 709,423		$ 403	$ 1,038,048		$ (305,655)		$ (23,373)
Balance (in shares) at Mar. 31, 2023			40,292