CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Statement of Comprehensive Income [Abstract]
Net Income (Loss)	$ (1,470)	$ (9,570)	$ (17,632)	$ 2,153,624
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustments reclassed out of accumulated other comprehensive income related to discontinued operations				(16,567)
Net investment hedge currency translation adjustment, net of tax effects of $(75) and $(24,315) for the three and nine months ended June 30, 2023 and $13,815 and $16,733 for the three and nine months ended June 30, 2022	(218)	41,956	(70,478)	49,081
Foreign currency translation adjustments	1,876	(70,179)	113,140	(85,160)
Changes in unrealized gains (losses) on marketable securities, net of tax effects of $23 and $1,418 for the three and nine months ended June 30, 2023 and $(911) and $(1,809) for the three and nine months ended June 30, 2022	67	(2,898)	4,109	(5,306)
Actuarial gains, net of tax effects of $0 and $0 during the three and nine months ended June 30, 2023, $7 and $27 during the three and nine months ended June 30, 2022		26		108
Total other comprehensive income (loss), net of tax	1,725	(31,095)	46,771	(57,844)
Comprehensive income (loss)	$ 255	$ (40,665)	$ 29,139	$ 2,095,780