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CREDIT DISCLSOURES - Impaired Loans (Details) - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Sep. 30, 2017
Loans without a specific valuation allowance
Recorded Balance	$ 1,915		$ 1,181
Unpaid Principal Balance	1,915		1,181
Average Recorded Investment	1,426	$ 772
1-4 Family Real Estate [Member]
Loans without a specific valuation allowance
Recorded Balance	95		72
Unpaid Principal Balance	95		72
Average Recorded Investment	80	172
Commercial and Multi-Family Real Estate [Member]
Loans without a specific valuation allowance
Recorded Balance	707		1,109
Unpaid Principal Balance	707		$ 1,109
Average Recorded Investment	975	432
Consumer Loans [Member]
Loans without a specific valuation allowance
Recorded Balance	61
Unpaid Principal Balance	61
Average Recorded Investment	20	0
Commercial Operating [Member]
Loans without a specific valuation allowance
Average Recorded Investment	0	168
Agricultural Operating [Member]
Loans without a specific valuation allowance
Recorded Balance	1,052
Unpaid Principal Balance	1,052
Average Recorded Investment	$ 351	$ 0

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- Definition

Average amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 15
-Subparagraph (c)(1)
-URI http://asc.fasb.org/extlink&oid=66008989&loc=d3e5212-111524

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 17
-URI http://asc.fasb.org/extlink&oid=66008989&loc=d3e5258-111524

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Amount of investment in impaired financing receivables for which there is no related allowance for credit losses.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 14A
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=66008989&loc=SL6953550-111524

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Amount of unpaid principal balance of impaired financing receivables for which there is no related allowance for credit losses.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 15
-Subparagraph (a)(4)
-URI http://asc.fasb.org/extlink&oid=66008989&loc=d3e5212-111524

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