Loans and Allowance for Loan Losses, Activity and Allocation of Allowance for Loan Losses (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Mar. 31, 2016	Mar. 31, 2015	Jun. 30, 2015
Activity of allowance for loan losses by loan category [Roll Forward]
Balance, beginning of period	$ 8,611	$ 7,796	$ 8,142	$ 7,419
Charge-offs	69	416	374	785
Recoveries	25	28	82	58
Provision	421	416	1,138	1,132
Balance, end of period	8,988	7,824	8,988	7,824
Allocation of allowance for loan losses by loan category [Abstract]
Allowance for loan losses, ending balance, impairment analysis individually evaluated	336		336		$ 451
Allowance for loan losses, ending balance, impairment analysis collectively evaluated	8,652		8,652		7,691
Loans receivable, ending balance, impairment analysis individually evaluated	3,256		3,256		4,191
Loans receivable, ending balance, impairment analysis collectively evaluated	497,926		497,926		446,564
Residential Real Estate [Member] | Residential Real Estate [Member]
Activity of allowance for loan losses by loan category [Roll Forward]
Balance, beginning of period	2,392	2,589	2,454	2,731
Charge-offs	0	53	0	295
Recoveries	0	6	0	6
Provision	29	(43)	(33)	57
Balance, end of period	2,421	2,499	2,421	2,499
Allocation of allowance for loan losses by loan category [Abstract]
Allowance for loan losses, ending balance, impairment analysis individually evaluated	273		273		263
Allowance for loan losses, ending balance, impairment analysis collectively evaluated	2,148		2,148		2,191
Loans receivable, ending balance, impairment analysis individually evaluated	1,730		1,730		1,843
Loans receivable, ending balance, impairment analysis collectively evaluated	230,600		230,600		224,805
Residential Real Estate [Member] | Construction and Land [Member]
Activity of allowance for loan losses by loan category [Roll Forward]
Balance, beginning of period	70	3,467	50	2,936
Charge-offs	0	127	0	127
Recoveries	0	0	0	0
Provision	1	228	21	759
Balance, end of period	71	3,568	71	3,568
Allocation of allowance for loan losses by loan category [Abstract]
Allowance for loan losses, ending balance, impairment analysis individually evaluated	0		0		0
Allowance for loan losses, ending balance, impairment analysis collectively evaluated	71		71		50
Loans receivable, ending balance, impairment analysis individually evaluated	0		0		0
Loans receivable, ending balance, impairment analysis collectively evaluated	5,267		5,267		3,621
Residential Real Estate [Member] | Multi-family [Member]
Activity of allowance for loan losses by loan category [Roll Forward]
Balance, beginning of period	25	51	40	42
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Provision	(3)	2	(18)	11
Balance, end of period	22	53	22	53
Allocation of allowance for loan losses by loan category [Abstract]
Allowance for loan losses, ending balance, impairment analysis individually evaluated	0		0		0
Allowance for loan losses, ending balance, impairment analysis collectively evaluated	22		22		40
Loans receivable, ending balance, impairment analysis individually evaluated	0		0		0
Loans receivable, ending balance, impairment analysis collectively evaluated	3,848		3,848		4,287
Commercial Real Estate [Member] | Real Estate [Member]
Activity of allowance for loan losses by loan category [Roll Forward]
Balance, beginning of period	4,020	148	3,699	38
Charge-offs	0	0	162	0
Recoveries	0	0	17	0
Provision	377	7	843	117
Balance, end of period	4,397	155	4,397	155
Allocation of allowance for loan losses by loan category [Abstract]
Allowance for loan losses, ending balance, impairment analysis individually evaluated	61		61		187
Allowance for loan losses, ending balance, impairment analysis collectively evaluated	4,336		4,336		3,512
Loans receivable, ending balance, impairment analysis individually evaluated	1,434		1,434		2,101
Loans receivable, ending balance, impairment analysis collectively evaluated	174,776		174,776		140,222
Commercial Real Estate [Member] | Construction [Member]
Activity of allowance for loan losses by loan category [Roll Forward]
Balance, beginning of period	331	44	233	59
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Provision	(17)	(2)	81	(17)
Balance, end of period	314	42	314	42
Allocation of allowance for loan losses by loan category [Abstract]
Allowance for loan losses, ending balance, impairment analysis individually evaluated	0		0		0
Allowance for loan losses, ending balance, impairment analysis collectively evaluated	314		314		233
Loans receivable, ending balance, impairment analysis individually evaluated	0		0		0
Loans receivable, ending balance, impairment analysis collectively evaluated	12,140		12,140		8,936
Consumer Loan [Member] | Home Equity [Member]
Activity of allowance for loan losses by loan category [Roll Forward]
Balance, beginning of period	305	372	314	361
Charge-offs	0	121	0	121
Recoveries	0	0	0	0
Provision	0	53	(9)	64
Balance, end of period	305	304	305	304
Allocation of allowance for loan losses by loan category [Abstract]
Allowance for loan losses, ending balance, impairment analysis individually evaluated	0		0		0
Allowance for loan losses, ending balance, impairment analysis collectively evaluated	305		305		314
Loans receivable, ending balance, impairment analysis individually evaluated	5		5		154
Loans receivable, ending balance, impairment analysis collectively evaluated	21,317		21,317		20,865
Consumer Loan [Member] | Consumer Installment [Member]
Activity of allowance for loan losses by loan category [Roll Forward]
Balance, beginning of period	188	244	223	240
Charge-offs	50	73	193	194
Recoveries	25	20	65	44
Provision	29	15	97	116
Balance, end of period	192	206	192	206
Allocation of allowance for loan losses by loan category [Abstract]
Allowance for loan losses, ending balance, impairment analysis individually evaluated	0		0		0
Allowance for loan losses, ending balance, impairment analysis collectively evaluated	192		192		223
Loans receivable, ending balance, impairment analysis individually evaluated	0		0		0
Loans receivable, ending balance, impairment analysis collectively evaluated	4,084		4,084		4,123
Commercial Loans [Member]
Activity of allowance for loan losses by loan category [Roll Forward]
Balance, beginning of period	1,272	881	1,129	811
Charge-offs	19	42	19	48
Recoveries	0	2	0	8
Provision	7	156	150	226
Balance, end of period	1,260	997	1,260	997
Allocation of allowance for loan losses by loan category [Abstract]
Allowance for loan losses, ending balance, impairment analysis individually evaluated	2		2		1
Allowance for loan losses, ending balance, impairment analysis collectively evaluated	1,258		1,258		1,128
Loans receivable, ending balance, impairment analysis individually evaluated	87		87		93
Loans receivable, ending balance, impairment analysis collectively evaluated	45,894		45,894		39,705
Unallocated [Member]
Activity of allowance for loan losses by loan category [Roll Forward]
Balance, beginning of period	8	0	0	201
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Provision	(2)	0	6	(201)
Balance, end of period	6	$ 0	6	$ 0
Allocation of allowance for loan losses by loan category [Abstract]
Allowance for loan losses, ending balance, impairment analysis individually evaluated	0		0		0
Allowance for loan losses, ending balance, impairment analysis collectively evaluated	6		6		0
Loans receivable, ending balance, impairment analysis individually evaluated	0		0		0
Loans receivable, ending balance, impairment analysis collectively evaluated	$ 0		$ 0		$ 0