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Summary of Significant Accounting Policies Text Tags (Details) - USD ($)	6 Months Ended		12 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Mar. 31, 2003	Jun. 30, 2025	Mar. 31, 2025	Jun. 30, 2024	Mar. 31, 2024
Accounting Policies [Abstract]
Proceeds from Issuance of Long-term Debt	$ 4,127,000	$ 1,814,000	$ 13,000,000
Proceeds from (Payment for) Other Financing Activity			$ 400,000
Allowance for Credit Loss, Excluding Accrued Interest	6,129,000	6,242,000		$ 6,321,000	$ 6,337,000	$ 5,955,000	$ 5,871,000
Proceeds from Sale of Held-to-Maturity Securities	$ 0	$ 0

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Amount excluding accrued interest, of allowance for credit loss on financing receivable. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479344/326-20-45-1

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The cash inflow from a debt initially having maturity due after one year or beyond the operating cycle, if longer.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 3
-Subparagraph (SX 210.6-03(i)(1))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479886/946-10-S99-3

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-Topic 230
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Amount of cash inflow (outflow) from financing activity, classified as other.

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 230
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
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Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
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-Topic 230
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The cash inflow associated with the sale of securities that had been designated as held-to-maturity. Excludes proceeds from maturities, prepayments and calls by the issuer.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 320
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 11
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