Loans, Allowance for Loan Losses and Impaired Loans (Details 1) - USD ($) $ in Thousands	9 Months Ended		12 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Sep. 30, 2015
Allowance for Loan Losses:
Beginning balance	$ 6,496	$ 6,506	$ 6,506
Charge-offs	(505)		(1,006)
Recoveries	170		340
Provision	75	535	656
Allowance allocation adjustment	0		0
Ending balance	6,236		6,496
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]
Amount of allowance for loan losses arising from loans individually evaluated for impairment	611		582
Amount of allowance for loan losses arising from loans collectively evaluated for impairment	5,625		5,914
Loans Receivable:
Ending balance of loans	584,046		450,510
Ending balance: individually evaluated for impairment	5,584		5,314
Ending balance: collectively evaluated for impairment	578,462		445,196
Acquired Loans
Allowance for Loan Losses:
Beginning balance	0
Ending balance			0
Loans Receivable:
Ending balance of loans	109,833
Other acquired loans
Allowance for Loan Losses:
Beginning balance	0
Ending balance			0
Loans Receivable:
Ending balance of loans	106,183
Purchased credit-impaired loans
Allowance for Loan Losses:
Beginning balance	0
Ending balance			0
Loans Receivable:
Ending balance of loans	3,650
Originated Loans
Allowance for Loan Losses:
Beginning balance	6,236
Ending balance			6,236
Loans Receivable:
Ending balance of loans	474,213
Consumer Real Estate
Allowance for Loan Losses:
Beginning balance	2,364	2,759	2,759
Charge-offs	(111)		(405)
Recoveries	7		69
Provision	30		382
Allowance allocation adjustment	(166)		(441)
Ending balance	2,124		2,364
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]
Amount of allowance for loan losses arising from loans individually evaluated for impairment	422		463
Amount of allowance for loan losses arising from loans collectively evaluated for impairment	1,702		1,901
Loans Receivable:
Ending balance of loans	193,913		180,693
Ending balance: individually evaluated for impairment	4,670		4,466
Ending balance: collectively evaluated for impairment	189,243		176,227
Consumer Real Estate | Acquired Loans
Allowance for Loan Losses:
Beginning balance	0
Ending balance			0
Consumer Real Estate | Other acquired loans
Allowance for Loan Losses:
Beginning balance	0
Ending balance			0
Loans Receivable:
Ending balance of loans	69,198
Consumer Real Estate | Purchased credit-impaired loans
Allowance for Loan Losses:
Beginning balance	0
Ending balance			0
Loans Receivable:
Ending balance of loans	399
Consumer Real Estate | Originated Loans
Allowance for Loan Losses:
Beginning balance	2,124
Ending balance			2,124
Loans Receivable:
Ending balance of loans	124,316
Commercial/agricultural
Allowance for Loan Losses:
Beginning balance	1,617	0	0
Charge-offs	0		0
Recoveries	0		0
Provision	10		16
Allowance allocation adjustment	249		1,601
Ending balance	1,876		1,617
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]
Amount of allowance for loan losses arising from loans individually evaluated for impairment	0		0
Amount of allowance for loan losses arising from loans collectively evaluated for impairment	1,876		1,617
Loans Receivable:
Ending balance of loans	156,621		63,266
Ending balance: individually evaluated for impairment	0		0
Ending balance: collectively evaluated for impairment	156,621		63,266
Commercial/agricultural | Acquired Loans
Allowance for Loan Losses:
Beginning balance	0
Ending balance			0
Commercial/agricultural | Other acquired loans
Allowance for Loan Losses:
Beginning balance	0
Ending balance			0
Loans Receivable:
Ending balance of loans	26,770
Commercial/agricultural | Purchased credit-impaired loans
Allowance for Loan Losses:
Beginning balance	0
Ending balance			0
Loans Receivable:
Ending balance of loans	1,762
Commercial/agricultural | Originated Loans
Allowance for Loan Losses:
Beginning balance	1,876
Ending balance			1,876
Loans Receivable:
Ending balance of loans	128,089
Consumer and Other
Allowance for Loan Losses:
Beginning balance	2,263	3,747	3,747
Charge-offs	(394)		(601)
Recoveries	163		271
Provision	35		258
Allowance allocation adjustment	128		(1,412)
Ending balance	2,195		2,263
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]
Amount of allowance for loan losses arising from loans individually evaluated for impairment	189		119
Amount of allowance for loan losses arising from loans collectively evaluated for impairment	2,006		2,144
Loans Receivable:
Ending balance of loans	233,512		206,551
Ending balance: individually evaluated for impairment	914		848
Ending balance: collectively evaluated for impairment	232,598		205,703
Consumer and Other | Acquired Loans
Allowance for Loan Losses:
Beginning balance	0
Ending balance			0
Consumer and Other | Other acquired loans
Allowance for Loan Losses:
Beginning balance	0
Ending balance			0
Loans Receivable:
Ending balance of loans	10,215
Consumer and Other | Purchased credit-impaired loans
Allowance for Loan Losses:
Beginning balance	0
Ending balance			0
Loans Receivable:
Ending balance of loans	1,489
Consumer and Other | Originated Loans
Allowance for Loan Losses:
Beginning balance	2,195
Ending balance			2,195
Loans Receivable:
Ending balance of loans	221,808
Unallocated
Allowance for Loan Losses:
Beginning balance	252	$ 0	0
Charge-offs	0		0
Recoveries	0		0
Provision	0		0
Allowance allocation adjustment	(211)		252
Ending balance	41		252
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]
Amount of allowance for loan losses arising from loans individually evaluated for impairment	0		0
Amount of allowance for loan losses arising from loans collectively evaluated for impairment	41		252
Loans Receivable:
Ending balance of loans	0		0
Ending balance: individually evaluated for impairment	0		0
Ending balance: collectively evaluated for impairment	0		0
Unallocated | Acquired Loans
Allowance for Loan Losses:
Beginning balance	0
Ending balance			0
Unallocated | Other acquired loans
Allowance for Loan Losses:
Beginning balance	0
Ending balance			0
Loans Receivable:
Ending balance of loans	0
Unallocated | Purchased credit-impaired loans
Allowance for Loan Losses:
Beginning balance	0
Ending balance			0
Loans Receivable:
Ending balance of loans	0
Unallocated | Originated Loans
Allowance for Loan Losses:
Beginning balance	41
Ending balance			$ 41
Loans Receivable:
Ending balance of loans	$ 0