EMPLOYEE BENEFIT PLANS (Details) - Estimated future benefit payments to retirees $ in Thousands	Sep. 30, 2018 USD ($)
Pension Plan [Member]
EMPLOYEE BENEFIT PLANS (Details) - Estimated future benefit payments to retirees [Line Items]
2018	$ 10,767
2019	10,892
2020	10,979
2021	10,960
2022	10,950
2024 through 2028	53,652
Supplemental Employee Retirement Plan [Member]
EMPLOYEE BENEFIT PLANS (Details) - Estimated future benefit payments to retirees [Line Items]
2018	1,906
2019	1,822
2020	1,734
2021	1,642
2022	1,545
2024 through 2028	$ 6,068

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- Definition

Amount of benefits for defined benefit plan expected to be paid in five fiscal years after fifth fiscal year following latest fiscal year.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (f)
-URI http://asc.fasb.org/extlink&oid=108410482&loc=d3e1928-114920

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- Definition

Amount of benefits for defined benefit plan expected to be paid in next fiscal year following latest fiscal year.

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- Definition

Amount of benefits for defined benefit plan expected to be paid in fifth fiscal year following latest fiscal year.

+ References

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Amount of benefits for defined benefit plan expected to be paid in fourth fiscal year following latest fiscal year.

+ References

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Amount of benefits for defined benefit plan expected to be paid in third fiscal year following latest fiscal year.

+ References

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Amount of benefits for defined benefit plan expected to be paid in second fiscal year following latest fiscal year.

+ References

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