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EMPLOYEE BENEFIT PLANS (Tables)

12 Months Ended

Sep. 30, 2021

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, 2021 and a statement of the funded status as of September 30, 2021 and 2020:

(in thousands)			2021						2020
Accumulated benefit obligation			$	110,352					$	116,146
Changes in projected benefit obligations:
Projected benefit obligation at beginning of year			$	116,146					$	119,845
Interest cost			2,925						3,598
Actuarial loss			7,111						4,310
Benefits paid			(15,749)						(11,607)
Other			(81)						—
Projected benefit obligation at end of year			$	110,352					$	116,146
Change in plan assets:
Fair value of plan assets at beginning of year			$	86,103					$	91,142
Actual return on plan assets			11,835						6,535
Employer contribution			5,066						33
Benefits paid			(15,749)						(11,607)
Fair value of plan assets at end of year			$	87,255					$	86,103
Funded status of the plan at end of year			$	(23,097)					$	(30,043)

Schedule of Amounts Recognized in the Consolidated Balance Sheets

The amounts recognized in the Consolidated Balance Sheets at September 30, 2021 and 2020 are as follows:

(in thousands)			2021						2020
Accrued liabilities			$	—					$	(18)
Noncurrent liabilities-other			(23,097)						(30,025)
Net amount recognized			$	(23,097)					$	(30,043)

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 Loss at September 30, 2021 and 2020, and not yet reflected in net periodic benefit cost, are as follows:

(in thousands)			2021						2020
Net actuarial loss			$	26,268					$	33,923

Schedule of Weighted Average Assumptions Used for the Pension Calculations

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

			September 30,
			2021						2020						2019
Discount rate for net periodic benefit costs			2.66		%				3.16		%				4.27		%
Discount rate for year-end obligations			2.75		%				2.66		%				3.16		%
Expected return on plan assets			3.50		%				4.65		%				5.60		%

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)			2021						2020						2019
Interest cost			$	2,925					$	3,598					$	4,389
Expected return on plan assets			(3,722)						(4,784)						(5,523)
Recognized net actuarial loss			3,205						2,718						1,229
Settlement			3,448						3,001						1,953
Other			(81)						—						—
Net pension expense			$	5,775					$	4,533					$	2,048

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,
2022						2023						2024						2025						2026						2027 – 2031						Total
$	7,316					$	7,731					$	8,483					$	7,018					$	7,406					$	30,990					$	68,944

Schedule of Target Allocation and Asset Allocation for the Pension Plan

The target allocation for 2022 and the asset allocation for the Pension Plan at the end of fiscal years 2021 and 2020, by asset category, follows:

			Target Allocation						September 30,
Asset Category			2022						2021						2020
U.S. equities			17		%				46		%				42		%
International equities			12						17						22
Fixed income			71						37						36
Total			100		%				100		%				100		%

Schedule of Fair Value of Pension Plan Assets

The fair value of Pension Plan assets at September 30, 2021 and 2020, summarized by level within the fair value hierarchy described in Note 13—Fair Value Measurement of Financial Instruments, are as follows:

			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

			September 30, 2020
(in thousands)			Total						Level 1						Level 2						Level 3
Short-term investments			$	1,541					$	1,541					$	—					$	—
Mutual funds:
Domestic stock funds			35,660						35,660						—						—
Bond funds			17,328						17,328						—						—
Balanced funds			17,447						17,447						—						—
International stock funds			14,044						14,044						—						—
Total mutual funds			84,479						84,479						—						—
Oil and gas properties			83						—						—						83
Total			$	86,103					$	86,020					$	—					$	83

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