v3.26.1
EMPLOYEE BENEFIT PLANS - Schedule of Defined Benefit Pension Income Included in Other Income (Expense ) (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Retirement Benefits [Abstract]        
Service cost $ 93 $ 0 $ 281 $ 0
Interest cost 173 288 522 864
Expected return on plan assets 0 (292) 0 (877)
Amortization:        
Prior service cost 1,608 0 4,826 0
Recognized actuarial loss 173 95 519 285
Net periodic benefit plan expense $ 2,047 $ 91 $ 6,148 $ 272