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SECURITIES - Narrative (Details) - USD ($)	9 Months Ended
	Jun. 30, 2019	Oct. 01, 2018	Sep. 30, 2018
Item Effected [Line Items]
Equity securities cost	$ 1,800,000
Equity securities fair value	1,900,000
Equity Securities without readily determinable fair value, amount	2,500,000		$ 2,000,000.0
Federal Home Loan Bank Stock, at cost	17,236,000		$ 23,400,000
Impairment recognized	$ 0
Accounting Standards Update 2016-01 | Retained Earnings
Item Effected [Line Items]
Adoption of accounting standards update		$ 475,000

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- Definition

Amount after tax of increase (decrease) to equity or (increase) decrease to net assets, resulting from the cumulative effect adjustment of a new accounting principle applied in the period of adoption.

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- Definition

Amount of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 45
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Cost of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI). Excludes equity method investment and investment in equity security without readily determinable fair value.

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Amount of investment in equity security without readily determinable fair value.

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Federal Home Loan Bank (FHLB) stock represents an equity interest in a FHLB. It does not have a readily determinable fair value because its ownership is restricted and it lacks a market (liquidity).

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Amount, before tax, of other-than-temporary impairment (OTTI) on investment in debt security measured at amortized cost (held-to-maturity), recognized in earnings and other comprehensive income (OCI).

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