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EMPLOYEE BENEFIT PLANS (Tables)

12 Months Ended

Sep. 30, 2023

Retirement Benefits [Abstract]

Schedule of Reconciliation of the Changes in the Pension Benefit Obligations and Fair Value of Pension Plan Assets

The following table provides a reconciliation of the changes in the pension benefit obligations and fair value of Pension Plan assets over the two-year period ended September 30, 2023 and a statement of the funded status as of September 30, 2023 and 2022:

			September 30,
(in thousands)			2023						2022
Accumulated benefit obligation			$	54,646					$	60,463
Changes in projected benefit obligations:
Projected benefit obligation at beginning of year			$	60,463					$	110,352
Interest cost			3,086						2,537
Actuarial gain			(4,940)						(16,260)
Benefits paid			(3,963)						(36,166)
Projected benefit obligation at end of year			$	54,646					$	60,463
Change in plan assets:
Fair value of plan assets at beginning of year			$	41,764					$	87,255
Actual return on plan assets			979						(14,324)
Employer contribution			5,000						5,000
Benefits paid			(3,963)						(36,167)
Fair value of plan assets at end of year			$	43,780					$	41,764
Funded status of the plan at end of year			$	(10,866)					$	(18,699)

Schedule of Weighted Average Assumptions Used for the Pension Calculations

The weighted average assumptions used for the pension calculations were as follows:

			September 30,
			2023						2022						2021
Discount rate for net periodic benefit costs			5.44		%				2.75		%				2.66		%
Discount rate for year-end obligations			5.77		%				5.44		%				2.75		%
Expected return on plan assets			4.50		%				4.25		%				3.50		%

Schedule of Components of the Net Periodic Pension (Benefit)

Components of the net periodic pension expense were as follows:

			Year Ended September 30,
(in thousands)			2023						2022						2021
Interest cost			$	3,086					$	2,537					$	2,925
Expected return on plan assets1			(1,762)						(2,481)						(3,722)
Recognized net actuarial loss			1,139						2,080						3,205
Settlement expense			—						9,031						3,448
Other			—						—						(81)
Net pension expense			$	2,463					$	11,167					$	5,775

(1)The Company uses the fair value of plan assets in determining the expected return on plan assets.

Schedule of Expected Benefits to be Paid from the Pension Plan in Each of the Next Five Fiscal Years and Thereafter

The following table reflects the expected benefits to be paid from the Pension Plan in each of the next five fiscal years, and in the aggregate for the five years thereafter (in thousands):

Year Ended September 30,
2024						2025						2026						2027						2028						2029 – 2033						Total
$	4,790					$	5,698					$	5,009					$	5,114					$	4,494					$	21,168					$	46,273

Schedule of Target Allocation and Asset Allocation for the Pension Plan

The target allocation for 2024 and the asset allocation for the Pension Plan at the end of fiscal years 2023 and 2022, by asset category, were as follows:

			Target Allocation						September 30,
Asset Category			2024						2023						2022
U.S. equities			17		%				17		%				18		%
International equities			12						12						11
Fixed income			71						71						71
Total			100		%				100		%				100		%

Schedule of Fair Value of Pension Plan Assets

The fair value of Pension Plan assets at September 30, 2023 and 2022, summarized by level within the fair value hierarchy described in Note 12—Fair Value Measurement of Financial Instruments, are as follows:

			September 30, 2023
(in thousands)			Total						Level 1						Level 2						Level 3
Short-term investments			$	1,018					$	1,018					$	—					$	—
Mutual funds:
Domestic stock funds			7,299						7,299						—						—
Bond funds			30,319						30,319						—						—
International stock funds			5,120						5,120						—						—
Total mutual funds			42,738						42,738						—						—
Oil and gas properties			24						—						—						24
Total			$	43,780					$	43,756					$	—					$	24

			September 30, 2022
(in thousands)			Total						Level 1						Level 2						Level 3
Short-term investments			$	555					$	555					$	—					$	—
Mutual funds:
Domestic stock funds			7,318						7,318						—						—
Bond funds			29,093						29,093						—						—
International stock funds			4,739						4,739						—						—
Total mutual funds			41,150						41,150						—						—
Oil and gas properties			59						—						—						59
Total			$	41,764					$	41,705					$	—					$	59

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