CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (Unaudited) - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock	Additional Paid-in-Capital	(Accumulated Deficit) Retained Earnings	Accumulated Other Comprehensive Income (Loss)
Balance at Sep. 30, 2020	$ 960,071	$ 369	$ 974,307	$ (18,316)	$ 3,711
Balance (in shares) at Sep. 30, 2020		36,842
Net (loss) income	37,902			37,902
Other comprehensive income (loss)	5,868				5,868
Issuance of common stock	6,682	$ 14	6,668
Issuance of common stock, (in shares)		1,441
Stock withheld to cover tax withholdings requirements upon stock vesting	(34,089)	$ (4)	(34,085)
Stock withheld to cover tax withholdings requirements upon stock vesting, (in shares)		(455)
Stock-based compensation	45,415		45,415
Balance at Jun. 30, 2021	1,021,849	$ 379	992,305	19,586	9,579
Balance (in shares) at Jun. 30, 2021		37,828
Balance at Mar. 31, 2021	1,003,441	$ 379	983,640	13,788	5,634
Balance (in shares) at Mar. 31, 2021		37,780
Net (loss) income	5,798			5,798
Other comprehensive income (loss)	3,945				3,945
Issuance of common stock	1,637		1,637
Issuance of common stock, (in shares)		51
Stock withheld to cover tax withholdings requirements upon stock vesting	(1,889)		(1,889)
Stock withheld to cover tax withholdings requirements upon stock vesting, (in shares)		(3)
Stock-based compensation	8,917		8,917
Balance at Jun. 30, 2021	1,021,849	$ 379	992,305	19,586	9,579
Balance (in shares) at Jun. 30, 2021		37,828
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	(80,699)			(80,699)
Other comprehensive income (loss)	(22,689)				(22,689)
Issuance of common stock	34,943	$ 13	34,930
Issuance of common stock, (in shares)		1,437
Stock withheld to cover tax withholdings requirements upon stock vesting	(47,960)	$ (1)	(47,959)
Stock withheld to cover tax withholdings requirements upon stock vesting, (in shares)		(146)
Stock-based compensation	34,572		34,572
Balance at Jun. 30, 2022	950,112	$ 393	1,023,896	(53,122)	(21,055)
Balance (in shares) at Jun. 30, 2022		39,316
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
Net (loss) income	(99,267)			(99,267)
Other comprehensive income (loss)	(11,972)				(11,972)
Issuance of common stock	103		103
Issuance of common stock, (in shares)		12
Stock withheld to cover tax withholdings requirements upon stock vesting	(134)		(134)
Stock withheld to cover tax withholdings requirements upon stock vesting, (in shares)		(1)
Stock-based compensation	5,196		5,196
Balance at Jun. 30, 2022	$ 950,112	$ 393	$ 1,023,896	$ (53,122)	$ (21,055)
Balance (in shares) at Jun. 30, 2022		39,316