Loans and Allowance for Loan Losses (Components Of Recorded Investment In Loans For Each Portfolio Class) (Detail) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Sep. 30, 2012
Recorded Investment in Loans:
Principal loan balance	$ 409,604	$ 393,591
Accrued interest receivable	1,276	1,358
Net deferred loan origination fees and costs	213	382
Recorded investment in loans	411,093	395,331
Recorded Investment in Loans as Evaluated for Impairment:
Individually evaluated for impairment	11,439	10,146
Collectively evaluated for impairment	398,982	384,248
Acquired with deteriorated credit quality	672	937
Recorded investment in loans	411,093	395,331
Residential Real Estate
Recorded Investment in Loans:
Principal loan balance	184,680	190,958
Accrued interest receivable	649	691
Net deferred loan origination fees and costs	448	502
Recorded investment in loans	185,777	192,151
Recorded Investment in Loans as Evaluated for Impairment:
Individually evaluated for impairment	6,231	5,210
Collectively evaluated for impairment	178,908	186,236
Acquired with deteriorated credit quality	638	705
Recorded investment in loans	185,777	192,151
Commercial real estate
Recorded Investment in Loans:
Principal loan balance	115,546	90,290
Accrued interest receivable	305	305
Net deferred loan origination fees and costs	(146)	(75)
Recorded investment in loans	115,705	90,520
Recorded Investment in Loans as Evaluated for Impairment:
Individually evaluated for impairment	2,070	1,993
Collectively evaluated for impairment	113,635	88,331
Acquired with deteriorated credit quality	0	196
Recorded investment in loans	115,705	90,520
Construction Loans
Recorded Investment in Loans:
Principal loan balance	12,078	9,328
Accrued interest receivable	23	21
Net deferred loan origination fees and costs	(49)	(41)
Recorded investment in loans	12,052	9,308
Recorded Investment in Loans as Evaluated for Impairment:
Individually evaluated for impairment	177	174
Collectively evaluated for impairment	11,875	9,134
Acquired with deteriorated credit quality	0	0
Recorded investment in loans	12,052	9,308
Commercial business loans
Recorded Investment in Loans:
Principal loan balance	31,866	36,189
Accrued interest receivable	118	128
Net deferred loan origination fees and costs	(10)	(13)
Recorded investment in loans	31,974	36,304
Recorded Investment in Loans as Evaluated for Impairment:
Individually evaluated for impairment	237	80
Collectively evaluated for impairment	31,737	36,224
Acquired with deteriorated credit quality	0	0
Recorded investment in loans	31,974	36,304
Consumer
Recorded Investment in Loans:
Principal loan balance	27,698	30,627
Accrued interest receivable	80	101
Net deferred loan origination fees and costs	13	20
Recorded investment in loans	27,791	30,748
Recorded Investment in Loans as Evaluated for Impairment:
Individually evaluated for impairment	406	333
Collectively evaluated for impairment	27,351	30,379
Acquired with deteriorated credit quality	34	36
Recorded investment in loans	27,791	30,748
Multi-family residential
Recorded Investment in Loans:
Principal loan balance	27,148	23,879
Accrued interest receivable	57	69
Net deferred loan origination fees and costs	(41)	(6)
Recorded investment in loans	27,164	23,942
Recorded Investment in Loans as Evaluated for Impairment:
Individually evaluated for impairment	2,318	2,356
Collectively evaluated for impairment	24,846	21,586
Acquired with deteriorated credit quality	0	0
Recorded investment in loans	27,164	23,942
Land and land development
Recorded Investment in Loans:
Principal loan balance	10,588	12,320
Accrued interest receivable	44	43
Net deferred loan origination fees and costs	(2)	(5)
Recorded investment in loans	10,630	12,358
Recorded Investment in Loans as Evaluated for Impairment:
Individually evaluated for impairment	0	0
Collectively evaluated for impairment	10,630	12,358
Acquired with deteriorated credit quality	0	0
Recorded investment in loans	$ 10,630	$ 12,358