Investment Securities (Amortized Cost And Fair Value Of Investment Securities By Contractual Maturity) (Detail) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Sep. 30, 2014
Investments Classified by Contractual Maturity Date [Line Items]
Available for Sale, amortized cost, Due within one year	$ 530
Available for Sale, amortized cost, Due after one year through five years	5,374
Available for Sale, amortized cost, Due after five years through ten years	23,662
Available for Sale, amortized cost, Due after ten years	62,249
Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Total	91,815
Available-for-Sale, Amortized Cost	175,026	178,517
Available for Sale, fair value, Due within one year	534
Available for Sale, fair value, Due after one year through five years	5,652
Available for Sale, fair value, Due after five years through ten years	25,094
Available for Sale, fair value, Due after ten years	65,712
Available-for-sale Securities, Debt Maturities, Fair Value, Total	96,992
Available-for-sale, Fair Value	183,375	184,697
Held to Maturity, amortized cost, Due within one year	604
Held to Maturity, amortized cost, Due after one year through five years	1,779
Held to Maturity, amortized cost, Due after five years through ten years	1,386
Held to Maturity, amortized cost, Due after ten years	841
Held-to-maturity Securities, Debt Maturities, Net Carrying Amount	4,610
Held-to-Maturity, Amortized Cost	5,012	5,419
Held to Maturity, fair value, Due within one year	655
Held to Maturity, fair value, Due after one year through five years	2,093
Held to Maturity, fair value, Due after five years through ten years	1,579
Held to Maturity, fair value, Due after ten years	931
Held-to-maturity Securities, Debt Maturities, Fair Value	5,258
Held-to-Maturity, Fair Value	5,693	5,849
Collateralized Mortgage Obligations
Investments Classified by Contractual Maturity Date [Line Items]
Available-for-Sale, Amortized Cost	27,876
Available-for-sale, Fair Value	28,476
Held-to-Maturity, Amortized Cost	0
Held-to-Maturity, Fair Value	0
Asset-backed Securities
Investments Classified by Contractual Maturity Date [Line Items]
Available-for-Sale, Amortized Cost	5,208
Available-for-sale, Fair Value	6,780
Held-to-Maturity, Amortized Cost	0
Held-to-Maturity, Fair Value	0
SBA certificates
Investments Classified by Contractual Maturity Date [Line Items]
Available-for-Sale, Amortized Cost	1,619	1,753
Available-for-sale, Fair Value	1,631
Held-to-Maturity, Amortized Cost	0
Held-to-Maturity, Fair Value	0
Mortgage-backed securities
Investments Classified by Contractual Maturity Date [Line Items]
Available-for-Sale, Amortized Cost	48,508
Available-for-sale, Fair Value	49,496
Held-to-Maturity, Amortized Cost	402
Held-to-Maturity, Fair Value	$ 435