Investment Securities (Amortized Cost And Fair Value Of Investment Securities By Contractual Maturity) (Detail) - USD ($) $ in Thousands	Jun. 30, 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	5,745
Available for Sale, amortized cost, Due after five years through ten years	20,536
Available for Sale, amortized cost, Due after ten years	68,487
Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Total	95,298
Available-for-Sale, Amortized Cost	174,509	$ 178,517
Available for Sale, fair value, Due within one year	532
Available for Sale, fair value, Due after one year through five years	5,992
Available for Sale, fair value, Due after five years through ten years	21,527
Available for Sale, fair value, Due after ten years	70,192
Available-for-sale Securities, Debt Maturities, Fair Value, Total	98,243
Available-for-sale, Fair Value	180,087	184,697
Held to Maturity, amortized cost, Due within one year	604
Held to Maturity, amortized cost, Due after one year through five years	1,785
Held to Maturity, amortized cost, Due after five years through ten years	1,391
Held to Maturity, amortized cost, Due after ten years	804
Held-to-maturity Securities, Debt Maturities, Net Carrying Amount	4,584
Held-to-Maturity, Amortized Cost	4,941	5,419
Held to Maturity, fair value, Due within one year	644
Held to Maturity, fair value, Due after one year through five years	2,010
Held to Maturity, fair value, Due after five years through ten years	1,565
Held to Maturity, fair value, Due after ten years	875
Held-to-maturity Securities, Debt Maturities, Fair Value	5,094
Held-to-Maturity, Fair Value	5,485	5,849
Collateralized Mortgage Obligations
Investments Classified by Contractual Maturity Date [Line Items]
Available-for-Sale, Amortized Cost	24,535
Available-for-sale, Fair Value	25,043
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	4,994
Available-for-sale, Fair Value	6,442
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	1,545	$ 1,753
Available-for-sale, Fair Value	1,558
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	48,137
Available-for-sale, Fair Value	48,801
Held-to-Maturity, Amortized Cost	357
Held-to-Maturity, Fair Value	$ 391