ACCUMULATED OTHER COMPREHENSIVE LOSS (Tables)

12 Months Ended

Sep. 30, 2025

Equity [Abstract]

Schedule of Accumulated Other Comprehensive Loss

The following table presents the changes in accumulated other comprehensive loss by component, net of tax:

(in thousands)	Defined benefit pension items		Currency translation adjustments		Total
Balance as of September 30, 2023	$	(10,801)	$	(23,139)	$	(33,940)
Other comprehensive income before reclassifications	193		14,453		14,646
Amounts reclassified from accumulated other comprehensive loss	200		—		200
Net current period other comprehensive income	393		14,453		14,846
Balance as of September 30, 2024	$	(10,408)	$	(8,686)	$	(19,094)
Other comprehensive income before reclassifications	(162)		1,112		950
Amounts reclassified from accumulated other comprehensive loss	156		—		156
Net current period other comprehensive income	(6)		1,112		1,106
Balance as of September 30, 2025	$	(10,414)	$	(7,574)	$	(17,988)

Schedule of Reclassification out of Accumulated Other Comprehensive Income

The following is a summary of the amounts reclassified from accumulated other comprehensive loss to net income:

	Fiscal Year Ended
(in thousands)	September 30, 2025		September 30, 2024		September 30, 2023
Amortization of defined benefit pension items:
Amortization of net loss (included within other income, net)	$	208	$	266	$	667
Tax expense	(52)		(66)		(166)
Net reclassifications for the period	$	156	$	200	$	501