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Loans Receivable (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016
Financing Receivable, Recorded Investment [Line Items]
Construction	$ 5,683		$ 2,398
Land	869		1,304
Farm	2,385		2,062
Nonresidential real estate	30,053		29,211
Commercial nonmortgage	2,466		2,540
Consumer and other:
Loans on deposits	1,634		1,607
Home equity	7,110		6,853
Automobile	29		42
Unsecured	534		400
Loans receivable, gross	265,554		260,031
Undisbursed portion of loans in process	(3,022)		(296)
Deferred loan origination fees (costs)	(195)		42
Allowance for loan losses	(1,531)	$ (1,554)	(1,553)	$ (1,473)	$ (1,476)	$ (1,515)
Loans receivable - net	260,806		258,244
One- to four-family residential real estate [Member]
Consumer and other:
Loans receivable, gross	199,544		197,936
Allowance for loan losses	(739)	(774)	(773)	(801)	(803)	(862)
Multi-family [Member]
Consumer and other:
Loans receivable, gross	15,247		15,678
Allowance for loan losses	$ (244)	$ (243)	$ (243)	$ (211)	$ (208)	$ (192)

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Amount before allowance of loans issued to agricultural institutions. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans covered under loss sharing agreements.

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It represents the loans receivable of commercial non mortgage during the period.

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Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements.

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Amount before allowance of loans issued to build, improve or remodel a residential home. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements.

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Amount before allowance of revolving, open-end loan, extended under a line of credit and secured by the borrower's residential property. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements.

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Amount of deferred interest and fee income, unamortized costs incurred to originate loans and leases, unamortized loan commitments and loan syndication fees, and premiums over or discounts from face amounts of acquired loans. Excludes amounts for loans and leases covered under loss sharing agreements.

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Amount before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements.

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Amount of undisbursed portion of the loan receivable balance (loans in process). Excludes loans and leases covered under loss sharing agreements.

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Amount after allowance and deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements and loans held for sale.

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Amount before allowance of loans issued to agricultural institutions. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans covered under loss sharing agreements.

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Amount before allowance of commercial loans issued to businesses to acquire, develop, construct, improve, or refinance land or building. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans covered under loss sharing agreements.

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