Retirement Benefit Plans (Tables)

12 Months Ended

Sep. 30, 2022

Retirement Benefits [Abstract]

Net Pension Expense for Defined Benefit Plans

Net pension expense, benefit obligations and plan assets for the Company-sponsored defined benefit pension plans consist of the following:

	Years Ended  September 30,
	2022		2021
Service cost	$	42	$	131
Interest cost	714		699
Expected return on plan assets	(1,362)		(1,421)
Amortization of net loss	476		846
Settlement cost	208		274
Net pension expense for defined benefit plans	$	78	$	529

Roll Forward of Defined Benefit Pension Plan Obligations and Assets

The status of all defined benefit pension plans at September 30 is as follows:

	2022		2021
Benefit obligations:
Benefit obligations at beginning of year	$	29,330	$	31,793
Service cost	42		131
Interest cost	714		699
Actuarial (gain)	(5,265)		(967)
Benefits paid	(1,970)		(2,349)
Currency translation	(56)		23
Benefit obligations at end of year	$	22,795	$	29,330
Plan assets:
Plan assets at beginning of year	$	23,211	$	21,609
Actual return on plan assets	(3,376)		3,825
Employer contributions	72		126
Benefits paid	(1,970)		(2,349)
Plan assets at end of year	$	17,937	$	23,211

Net Plan Assets Recognized in the Consolidated Balance Sheets

	Plans in which Benefit Obligations Exceed Assets at September 30,
	2022		2021
Reconciliation of funded status:
Plan assets less than projected benefit obligations	$	(4,858)	$	(6,119)
Amounts recognized in accumulated other comprehensive loss:
Net loss	6,271		7,482
Net amount recognized in the consolidated balance sheets	$	1,413	$	1,363
Amounts recognized in the consolidated balance sheets are:
Accrued liabilities	(46)		(46)
Pension liability	(4,812)		(6,073)
Accumulated other comprehensive loss – pretax	6,271		7,482
Net amount recognized in the consolidated balance sheets	$	1,413	$	1,363

Weighted-Average Assumptions Used in Developing Benefit Obligation and Net Pension Expense

Where applicable, the following weighted-average assumptions were used in developing the benefit obligation and the net pension expense for defined benefit pension plans:

	Years Ended September 30,
	2022		2021
Discount rate for liabilities	5.2	%	2.6	%
Discount rate for expenses	2.9	%	3.1	%
Expected return on assets	6.4	%	7.0	%

Fair Values and Asset Allocation Ranges of Defined Benefit Plan Investments

The following tables set forth the asset allocation of the Company’s defined benefit pension plan assets and summarize the fair values and levels within the fair value hierarchy for such plan assets as of September 30, 2022 and 2021:

September 30, 2022	Asset Amount		Level 2		Level 3
U.S. equity securities:
Large value	$	393	$	393	$	—
Large blend	7,637		7,637		—
Large growth	302		302		—
Mid blend	167		167		—
Small blend	359		359		—
Non-U.S. equity securities:
Foreign large blend	1,276		1,276		—
Diversified emerging markets	63		63		—
U.S. debt securities:
Inflation protected bond	971		971		—
Intermediate term bond	6,332		4,503		1,829
High inflation bond	78		78		—
Stable value:
Short-term bonds	359		359		—
Total plan assets at fair value	$	17,937	$	16,108	$	1,829

September 30, 2021	Asset Amount		Level 2		Level 3
U.S. equity securities:
Large value	$	514	$	514	$	—
Large blend	10,227		10,227		—
Large growth	519		519		—
Mid blend	223		223		—
Small blend	697		697		—
Non-U.S. equity securities:
Foreign large blend	1,807		1,807		—
Diversified emerging markets	86		86		—
U.S. debt securities:
Inflation protected bond	1,087		1,087		—
Intermediate term bond	7,396		5,288		2,108
High inflation bond	189		189		—
Non-U.S. debt securities:
Emerging markets bonds	164		164		—
Stable value:
Short-term bonds	302		302		—
Total plan assets at fair value	$	23,211	$	21,103	$	2,108

The “Asset Allocation Range” listed below anticipates these potential scenarios and provides flexibility for the plans' investments to vary around the objective without triggering a reallocation of the assets, as noted by the following:

	Percent of Plan Assets at September 30,				Asset Allocation Range
	2022		2021
U.S. equities	49	%	53	%	30% to 70%
Non-U.S. equities	8	%	8	%	0% to 20%
U.S. debt securities	41	%	37	%	20% to 70%
Non-U.S. debt securities	—	%	1	%	0% to10%
Other securities	2	%	1	%	0% to 60%
Total	100	%	100	%

Changes in the Fair Value of Level 3 Defined Benefit Plan Investments

Changes in the fair value of the Company’s Level 3 investments during the years ending September 30, 2022 and 2021 were as follows:

	2022		2021
Balance at beginning of year	$	2,108	$	2,098
Actual return on plan assets	(279)		52
Purchases and sales of plan assets, net	—		(42)
Balance at end of year	$	1,829	$	2,108

Schedule of Projected Future Defined Benefit Plan Payments

The following defined benefit payment amounts are expected to be made in the future:

Years Ending September 30,	Projected Benefit Payments
2023	$	2,355
2024	1,903
2025	1,968
2026	1,785
2027	1,732
2028-2032	8,032