CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2022	Mar. 31, 2021
CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS)
Consolidated net (loss)	$ (6,664)	$ (723)	$ (90,075)	$ (1,089)
Other comprehensive income (loss), net of tax
Foreign currency translation adjustment	(1,114)		(867)
Defined benefit plans:
Amortization of periodic benefit costs	340		230
Other comprehensive (loss), net of tax	(774)		(637)
Consolidated comprehensive loss	(7,438)	(723)	(90,712)	(1,089)
Comprehensive loss attributable to non-controlling interests	577		941
Comprehensive loss attributable to common stockholders	$ (6,861)	$ (723)	$ (89,771)	$ (1,089)