PENSION PLAN (Narrative) (Details) - USD ($)	12 Months Ended
Sep. 30, 2021	Sep. 30, 2020
Long-term investment objective, equities	65.00%
Long-term investment objective, debt	35.00%
Funding guidelines, description	Asset rebalancing is performed at least annually, with interim adjustments made when the investment mix varies more than 5% from the target (i.e., a 10% target range)
Weighted average discount rate used to calculate net periodic pension cost	2.75%	3.25%
Weighted average discount rate	3.00%	2.75%
Expected long-term rate of return on assets	6.00%	6.25%
Inflation rate	2.50%
Actuarial losses	$ 1,167,000	$ 2,060,000
Acturial losses, income tax effects	351,000	$ 620,000
Acturial losses expected to be amortized within next year	$ 85,000
Minimum [Member]
Expected long-term rate of return on assets	5.00%
Maximum [Member]
Expected long-term rate of return on assets	7.00%
Equity Securities [Member] \| Minimum [Member]
Expected long-term rate of return on assets	6.00%
Target asset allocation	50.00%
Equity Securities [Member] \| Maximum [Member]
Expected long-term rate of return on assets	8.00%
Target asset allocation	75.00%
Fixed Income Securities [Member] \| Minimum [Member]
Expected long-term rate of return on assets	3.00%
Fixed Income Securities [Member] \| Maximum [Member]
Expected long-term rate of return on assets	5.00%
Debt Securities [Member] \| Minimum [Member]
Target asset allocation	25.00%
Debt Securities [Member] \| Maximum [Member]
Target asset allocation	50.00%

The tax effect of actuarial losses recognized in accumulated other comprehensive income.

No definition available.

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Inflation rate for present value of future retirement benefits cash flows, used to determine benefit obligation of defined benefit plan.

+ References

No definition available.

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- Definition

The long-term investment objective of the pension plan's investments in debt securities (as a percentage).

+ References

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The long-term investment objective of the pension plan's investments in equity securities (as a percentage).

+ References

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- Definition

Guidelines pertaining to investment holdings for defined benefit plan assets.

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- Definition

Amount, after tax, of accumulated other comprehensive income (loss) for gain (loss) of defined benefit plan, that has not been recognized in net periodic benefit (cost) credit.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
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Weighted average rate for present value of future retirement benefits cash flows, used to determine benefit obligation of defined benefit plan.

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Weighted average rate for present value of future retirement benefits cash flows, used to determine net periodic benefit cost of defined benefit plan.

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Weighted average rate of return on plan assets, reflecting average rate of earnings expected on existing plan assets and expected contributions, used to determine net periodic benefit cost of defined benefit plan.

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Amount included in accumulated other comprehensive income (loss) for gain (loss) of defined benefit plan expected to be recognized in net periodic benefit (cost) credit for fiscal year following most recent annual statement of financial position.

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Percentage of target investment allocation to total plan assets. Includes, but is not limited to, percentage on weighted-average basis if more than one plan.

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