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EMPLOYEE BENEFIT PLANS (Tables)

12 Months Ended

Sep. 30, 2022

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, 2022 and a statement of the funded status as of September 30, 2022 and 2021:

			September 30,
(in thousands)			2022						2021
Accumulated benefit obligation			$	60,463					$	110,352
Changes in projected benefit obligations:
Projected benefit obligation at beginning of year			$	110,352					$	116,146
Interest cost			2,537						2,925
Actuarial (gain) loss			(16,260)						7,111
Benefits paid			(36,166)						(15,749)
Other			—						(81)
Projected benefit obligation at end of year			$	60,463					$	110,352
Change in plan assets:
Fair value of plan assets at beginning of year			$	87,255					$	86,103
Actual return on plan assets			(14,324)						11,835
Employer contribution			5,000						5,066
Benefits paid			(36,167)						(15,749)
Fair value of plan assets at end of year			$	41,764					$	87,255
Funded status of the plan at end of year			$	(18,699)					$	(23,097)

Schedule of Amounts Recognized in the Consolidated Balance Sheets

The amounts recognized in the Consolidated Balance Sheets at September 30, 2022 and 2021 are as follows:

			September 30,
(in thousands)			2022						2021
Accrued liabilities			$	—					$	—
Noncurrent liabilities-other			(18,699)						(23,097)
Net amount recognized			$	(18,699)					$	(23,097)

Schedule of Amounts Recognized in Accumulated Other Comprehensive Income (Loss) and Not Yet Reflected in Net Periodic Benefit Cost

The amounts recognized in Accumulated Other Comprehensive Income (Loss) at September 30, 2022 and 2021, and not yet reflected in net periodic benefit cost, are as follows:

			September 30,
(in thousands)			2022						2021
Net actuarial loss			$	15,703					$	26,268

Schedule of Weighted Average Assumptions Used for the Pension Calculations

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

			September 30,
			2022						2021						2020
Discount rate for net periodic benefit costs			2.75		%				2.66		%				3.16		%
Discount rate for year-end obligations			5.44		%				2.75		%				2.66		%
Expected return on plan assets			4.25		%				3.50		%				4.65		%

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)			2022						2021						2020
Interest cost			$	2,537					$	2,925					$	3,598
Expected return on plan assets1			(2,481)						(3,722)						(4,784)
Recognized net actuarial loss			2,080						3,205						2,718
Settlement expense			9,031						3,448						3,001
Other			—						(81)						—
Net pension expense			$	11,167					$	5,775					$	4,533

(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,
2023						2024						2025						2026						2027						2028 – 2032						Total
$	5,479					$	5,049					$	5,614					$	5,088					$	5,376					$	22,827					$	49,433

Schedule of Target Allocation and Asset Allocation for the Pension Plan

The target allocation for 2023 and the asset allocation for the Pension Plan at the end of fiscal years 2022 and 2021, by asset category, were as follows:

			Target Allocation						September 30,
Asset Category			2023						2022						2021
U.S. equities			17		%				18		%				46		%
International equities			12						11						17
Fixed income			71						71						37
Total			100		%				100		%				100		%

Schedule of Fair Value of Pension Plan Assets

The fair value of Pension Plan assets at September 30, 2022 and 2021, summarized by level within the fair value hierarchy described in Note 13—Fair Value Measurement of Financial Instruments, are as follows:

			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

			September 30, 2021
(in thousands)			Total						Level 1						Level 2						Level 3
Short-term investments			$	2,444					$	2,444					$	—					$	—
Mutual funds:
Domestic stock funds			35,212						35,212						—						—
Bond funds			17,679						17,679						—						—
Balanced funds			17,520						17,520						—						—
International stock funds			14,379						14,379						—						—
Total mutual funds			84,790						84,790						—						—
Oil and gas properties			21						—						—						21
Total			$	87,255					$	87,234					$	—					$	21

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