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Defined Pension Plans - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		9 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022	Sep. 30, 2022
Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Net periodic cost (benefit)	$ 138	$ 613	$ (273)	$ (1,200)	$ (2,564)
Contributions			0
Supplemental Employee Retirement Plan
Defined Benefit Plan Disclosure [Line Items]
Net periodic cost (benefit)	$ 118	$ 106	$ 236	$ 213	$ 426

X

- Definition

Amount of contribution received by defined benefit plan from employer which increases plan assets.

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Amount of net periodic benefit cost (credit) for defined benefit plan.

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