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Note 11 - Employee Benefit Plans (Tables)

3 Months Ended

Dec. 31, 2021

Notes Tables

Schedule of Net Benefit Costs [Table Text Block]

		Three Months Ended
		December 31,
		2021				2020
Components of net periodic pension cost:
Service cost		$	162,072			$	183,570
Interest cost			253,279				243,785
Expected return on plan assets			(457,888	)			(503,936	)
Recognized loss			36,600				125,535
Net periodic pension cost		$	(5,937	)		$	48,954

		Three Months Ended
		December 31,
		2021				2020
Components of postretirement benefit cost:
Service cost		$	24,450			$	35,172
Interest cost			110,930				107,623
Expected return on plan assets			(166,541	)			(149,122	)
Recognized loss			—				38,664
Net postretirement benefit cost		$	(31,161	)		$	32,337

Summary of Employer Contributions to Defined Benefit Plans [Table Text Block]

		Fiscal Year-to-Date Contributions				Remaining Fiscal Year Contributions
Pension plan		$	—			$	500,000
Postretirement plan			—				400,000
Total		$	—			$	900,000

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Tabular disclosure of the components of net benefit costs for pension plans and/or other employee benefit plans including service cost, interest cost, expected return on plan assets, gain (loss), prior service cost or credit, transition asset or obligation, and gain (loss) recognized due to settlements or curtailments.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (h)
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