Loans and Allowance for Loan Losses, Activity and Allocation of Allowance for Loan Losses (Details) - USD ($) $ in Thousands	3 Months Ended
Sep. 30, 2016	Sep. 30, 2015	Jun. 30, 2016
Activity of allowance for loan losses by loan category [Roll Forward]
Balance, beginning of period	$ 9,485	$ 8,142
Charge-offs	72	92
Recoveries	20	42
Provision	543	374
Balance, end of period	9,976	8,466
Allocation of allowance for loan losses by loan category [Abstract]
Allowance for loan losses, ending balance, impairment analysis individually evaluated	344		$ 330
Allowance for loan losses, ending balance, impairment analysis collectively evaluated	9,632		9,155
Loans receivable, ending balance, impairment analysis individually evaluated	3,226		3,242
Loans receivable, ending balance, impairment analysis collectively evaluated	554,595		528,048
Residential Real Estate [Member] \| Residential Real Estate [Member]
Activity of allowance for loan losses by loan category [Roll Forward]
Balance, beginning of period	2,396	2,454
Charge-offs	0	0
Recoveries	0	0
Provision	(154)	(68)
Balance, end of period	2,242	2,386
Allocation of allowance for loan losses by loan category [Abstract]
Allowance for loan losses, ending balance, impairment analysis individually evaluated	283		267
Allowance for loan losses, ending balance, impairment analysis collectively evaluated	1,959		2,129
Loans receivable, ending balance, impairment analysis individually evaluated	1,718		1,723
Loans receivable, ending balance, impairment analysis collectively evaluated	233,561		233,269
Residential Real Estate [Member] \| Construction and Land [Member]
Activity of allowance for loan losses by loan category [Roll Forward]
Balance, beginning of period	75	50
Charge-offs	0	0
Recoveries	0	0
Provision	(12)	12
Balance, end of period	63	62
Allocation of allowance for loan losses by loan category [Abstract]
Allowance for loan losses, ending balance, impairment analysis individually evaluated	0		0
Allowance for loan losses, ending balance, impairment analysis collectively evaluated	63		75
Loans receivable, ending balance, impairment analysis individually evaluated	0		0
Loans receivable, ending balance, impairment analysis collectively evaluated	5,199		5,575
Residential Real Estate [Member] \| Multi-family [Member]
Activity of allowance for loan losses by loan category [Roll Forward]
Balance, beginning of period	22	40
Charge-offs	0	0
Recoveries	0	0
Provision	(4)	(15)
Balance, end of period	18	25
Allocation of allowance for loan losses by loan category [Abstract]
Allowance for loan losses, ending balance, impairment analysis individually evaluated	0		0
Allowance for loan losses, ending balance, impairment analysis collectively evaluated	18		22
Loans receivable, ending balance, impairment analysis individually evaluated	0		0
Loans receivable, ending balance, impairment analysis collectively evaluated	3,893		3,918
Commercial Real Estate [Member] \| Real Estate [Member]
Activity of allowance for loan losses by loan category [Roll Forward]
Balance, beginning of period	4,541	3,699
Charge-offs	0	14
Recoveries	0	17
Provision	440	112
Balance, end of period	4,981	3,814
Allocation of allowance for loan losses by loan category [Abstract]
Allowance for loan losses, ending balance, impairment analysis individually evaluated	59		61
Allowance for loan losses, ending balance, impairment analysis collectively evaluated	4,922		4,480
Loans receivable, ending balance, impairment analysis individually evaluated	1,421		1,429
Loans receivable, ending balance, impairment analysis collectively evaluated	209,027		191,249
Commercial Real Estate [Member] \| Construction [Member]
Activity of allowance for loan losses by loan category [Roll Forward]
Balance, beginning of period	502	233
Charge-offs	0	0
Recoveries	0	0
Provision	126	(71)
Balance, end of period	628	162
Allocation of allowance for loan losses by loan category [Abstract]
Allowance for loan losses, ending balance, impairment analysis individually evaluated	0		0
Allowance for loan losses, ending balance, impairment analysis collectively evaluated	628		502
Loans receivable, ending balance, impairment analysis individually evaluated	0		0
Loans receivable, ending balance, impairment analysis collectively evaluated	25,428		20,159
Consumer Loan [Member] \| Home Equity [Member]
Activity of allowance for loan losses by loan category [Roll Forward]
Balance, beginning of period	309	314
Charge-offs	0	0
Recoveries	0	0
Provision	(58)	5
Balance, end of period	251	319
Allocation of allowance for loan losses by loan category [Abstract]
Allowance for loan losses, ending balance, impairment analysis individually evaluated	0		0
Allowance for loan losses, ending balance, impairment analysis collectively evaluated	251		309
Loans receivable, ending balance, impairment analysis individually evaluated	5		5
Loans receivable, ending balance, impairment analysis collectively evaluated	20,790		20,888
Consumer Loan [Member] \| Consumer Installment [Member]
Activity of allowance for loan losses by loan category [Roll Forward]
Balance, beginning of period	228	223
Charge-offs	72	78
Recoveries	17	25
Provision	(5)	70
Balance, end of period	168	240
Allocation of allowance for loan losses by loan category [Abstract]
Allowance for loan losses, ending balance, impairment analysis individually evaluated	0		0
Allowance for loan losses, ending balance, impairment analysis collectively evaluated	168		228
Loans receivable, ending balance, impairment analysis individually evaluated	0		0
Loans receivable, ending balance, impairment analysis collectively evaluated	4,470		4,350
Commercial Loans [Member]
Activity of allowance for loan losses by loan category [Roll Forward]
Balance, beginning of period	1,412	1,129
Charge-offs	0	0
Recoveries	3	0
Provision	77	123
Balance, end of period	1,492	1,252
Allocation of allowance for loan losses by loan category [Abstract]
Allowance for loan losses, ending balance, impairment analysis individually evaluated	2		2
Allowance for loan losses, ending balance, impairment analysis collectively evaluated	1,490		1,410
Loans receivable, ending balance, impairment analysis individually evaluated	82		85
Loans receivable, ending balance, impairment analysis collectively evaluated	52,227		48,640
Unallocated [Member]
Activity of allowance for loan losses by loan category [Roll Forward]
Balance, beginning of period	0	0
Charge-offs	0	0
Recoveries	0	0
Provision	133	206
Balance, end of period	133	$ 206
Allocation of allowance for loan losses by loan category [Abstract]
Allowance for loan losses, ending balance, impairment analysis individually evaluated	0		0
Allowance for loan losses, ending balance, impairment analysis collectively evaluated	133		0
Loans receivable, ending balance, impairment analysis individually evaluated	0		0
Loans receivable, ending balance, impairment analysis collectively evaluated	$ 0		$ 0

Amount of recoveries of receivables doubtful of collection that were previously charged off.

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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Amount of direct write-downs of accounts receivable charged against the allowance.

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- Definition

The valuation allowance for financing receivables that are expected to be uncollectible that were collectively evaluated for impairment.

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Amount of valuation allowance for financing receivables that are expected to be uncollectible that were individually evaluated for impairment.

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The balance of financing receivables that were collectively evaluated for impairment.

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- Definition

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 of expense related to estimated loss from loan and lease transactions.

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