Loans Receivable and Allowance for Loan Losses (Troubled Debt Restructurings on Loan Receivables, by Concession Type) (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012 Contracts	Sep. 30, 2011 Contracts
QTD [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	6	26
Balance at time of TDR	$ 10,938	$ 15,340
YTD [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	17	30
Balance at time of TDR	16,334	27,576
Granting a Material Extension of Time [Member] | QTD [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	3	18
Balance at time of TDR	713	11,558
Granting a Material Extension of Time [Member] | YTD [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	13	18
Balance at time of TDR	5,914	11,558
Forbearance Agreement [Member] | QTD [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	0	3
Balance at time of TDR	0	411
Forbearance Agreement [Member] | YTD [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	0	6
Balance at time of TDR	0	12,453
Accepting Interest Only for a Period of Time [Member] | QTD [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	0	0
Balance at time of TDR	0	0
Accepting Interest Only for a Period of Time [Member] | YTD [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	0	1
Balance at time of TDR	0	194
Adjusting the Interest Rate [Member] | QTD [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	1	0
Balance at time of TDR	3,404	0
Adjusting the Interest Rate [Member] | YTD [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	1	0
Balance at time of TDR	3,404	0
Change in Amortization Period [Member] | QTD [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	0	4
Balance at time of TDR	0	3,292
Change in Amortization Period [Member] | YTD [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	0	4
Balance at time of TDR	0	3,292
Adjusting the Interest Rate & Change in Amortization Period [Member] | QTD [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	2	1
Balance at time of TDR	6,821	79
Adjusting the Interest Rate & Change in Amortization Period [Member] | YTD [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	3	1
Balance at time of TDR	7,016	79
Commercial and industrial [Member] | QTD [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	1	1
Balance at time of TDR	3,404	555
Commercial and industrial [Member] | YTD [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	2	4
Balance at time of TDR	4,666	12,597
Commercial and industrial [Member] | Granting a Material Extension of Time [Member] | QTD [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	0	1
Balance at time of TDR	0	555
Commercial and industrial [Member] | Granting a Material Extension of Time [Member] | YTD [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	1	1
Balance at time of TDR	1,262	555
Commercial and industrial [Member] | Forbearance Agreement [Member] | QTD [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	0	0
Balance at time of TDR	0	0
Commercial and industrial [Member] | Forbearance Agreement [Member] | YTD [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	0	3
Balance at time of TDR	0	12,042
Commercial and industrial [Member] | Accepting Interest Only for a Period of Time [Member] | QTD [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	0	0
Balance at time of TDR	0	0
Commercial and industrial [Member] | Accepting Interest Only for a Period of Time [Member] | YTD [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	0	0
Balance at time of TDR	0	0
Commercial and industrial [Member] | Adjusting the Interest Rate [Member] | QTD [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	1	0
Balance at time of TDR	3,404	0
Commercial and industrial [Member] | Adjusting the Interest Rate [Member] | YTD [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	1	0
Balance at time of TDR	3,404	0
Commercial and industrial [Member] | Change in Amortization Period [Member] | QTD [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	0	0
Balance at time of TDR	0	0
Commercial and industrial [Member] | Change in Amortization Period [Member] | YTD [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	0	0
Balance at time of TDR	0	0
Commercial and industrial [Member] | Adjusting the Interest Rate & Change in Amortization Period [Member] | QTD [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	0	0
Balance at time of TDR	0	0
Commercial and industrial [Member] | Adjusting the Interest Rate & Change in Amortization Period [Member] | YTD [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	0	0
Balance at time of TDR	0	0
Owner occupied real estate [Member] | QTD [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	0	1
Balance at time of TDR	0	87
Owner occupied real estate [Member] | YTD [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	0	1
Balance at time of TDR	0	87
Owner occupied real estate [Member] | Granting a Material Extension of Time [Member] | QTD [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts		0
Balance at time of TDR		0
Owner occupied real estate [Member] | Granting a Material Extension of Time [Member] | YTD [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts		0
Balance at time of TDR		0
Owner occupied real estate [Member] | Forbearance Agreement [Member] | QTD [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts		1
Balance at time of TDR		87
Owner occupied real estate [Member] | Forbearance Agreement [Member] | YTD [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts		1
Balance at time of TDR		87
Owner occupied real estate [Member] | Accepting Interest Only for a Period of Time [Member] | QTD [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts		0
Balance at time of TDR		0
Owner occupied real estate [Member] | Accepting Interest Only for a Period of Time [Member] | YTD [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts		0
Balance at time of TDR		0
Owner occupied real estate [Member] | Adjusting the Interest Rate [Member] | QTD [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts		0
Balance at time of TDR		0
Owner occupied real estate [Member] | Adjusting the Interest Rate [Member] | YTD [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts		0
Balance at time of TDR		0
Owner occupied real estate [Member] | Change in Amortization Period [Member] | QTD [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts		0
Balance at time of TDR		0
Owner occupied real estate [Member] | Change in Amortization Period [Member] | YTD [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts		0
Balance at time of TDR		0
Owner occupied real estate [Member] | Adjusting the Interest Rate & Change in Amortization Period [Member] | QTD [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts		0
Balance at time of TDR		0
Owner occupied real estate [Member] | Adjusting the Interest Rate & Change in Amortization Period [Member] | YTD [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts		0
Balance at time of TDR		0
Commercial construction and land development [Member] | QTD [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	1	18
Balance at time of TDR	3,546	11,234
Commercial construction and land development [Member] | YTD [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	6	18
Balance at time of TDR	6,942	11,234
Commercial construction and land development [Member] | Granting a Material Extension of Time [Member] | QTD [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	0	17
Balance at time of TDR	0	11,003
Commercial construction and land development [Member] | Granting a Material Extension of Time [Member] | YTD [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	5	17
Balance at time of TDR	3,396	11,003
Commercial construction and land development [Member] | Forbearance Agreement [Member] | QTD [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	0	1
Balance at time of TDR	0	231
Commercial construction and land development [Member] | Forbearance Agreement [Member] | YTD [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	0	1
Balance at time of TDR	0	231
Commercial construction and land development [Member] | Accepting Interest Only for a Period of Time [Member] | QTD [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	0	0
Balance at time of TDR	0	0
Commercial construction and land development [Member] | Accepting Interest Only for a Period of Time [Member] | YTD [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	0	0
Balance at time of TDR	0	0
Commercial construction and land development [Member] | Adjusting the Interest Rate [Member] | QTD [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	0	0
Balance at time of TDR	0	0
Commercial construction and land development [Member] | Adjusting the Interest Rate [Member] | YTD [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	0	0
Balance at time of TDR	0	0
Commercial construction and land development [Member] | Change in Amortization Period [Member] | QTD [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	0	0
Balance at time of TDR	0	0
Commercial construction and land development [Member] | Change in Amortization Period [Member] | YTD [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	0	0
Balance at time of TDR	0	0
Commercial construction and land development [Member] | Adjusting the Interest Rate & Change in Amortization Period [Member] | QTD [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	1	0
Balance at time of TDR	3,546	0
Commercial construction and land development [Member] | Adjusting the Interest Rate & Change in Amortization Period [Member] | YTD [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	1	0
Balance at time of TDR	3,546	0
Commercial real estate [Member] | QTD [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	1	5
Balance at time of TDR	3,275	3,385
Commercial real estate [Member] | YTD [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	2	5
Balance at time of TDR	3,343	3,385
Commercial real estate [Member] | Granting a Material Extension of Time [Member] | QTD [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	0	0
Balance at time of TDR	0	0
Commercial real estate [Member] | Granting a Material Extension of Time [Member] | YTD [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	1	0
Balance at time of TDR	68	0
Commercial real estate [Member] | Forbearance Agreement [Member] | QTD [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	0	1
Balance at time of TDR	0	93
Commercial real estate [Member] | Forbearance Agreement [Member] | YTD [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	0	1
Balance at time of TDR	0	93
Commercial real estate [Member] | Accepting Interest Only for a Period of Time [Member] | QTD [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	0	0
Balance at time of TDR	0	0
Commercial real estate [Member] | Accepting Interest Only for a Period of Time [Member] | YTD [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	0	0
Balance at time of TDR	0	0
Commercial real estate [Member] | Adjusting the Interest Rate [Member] | QTD [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	0	0
Balance at time of TDR	0	0
Commercial real estate [Member] | Adjusting the Interest Rate [Member] | YTD [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	0	0
Balance at time of TDR	0	0
Commercial real estate [Member] | Change in Amortization Period [Member] | QTD [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	0	4
Balance at time of TDR	0	3,292
Commercial real estate [Member] | Change in Amortization Period [Member] | YTD [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	0	4
Balance at time of TDR	0	3,292
Commercial real estate [Member] | Adjusting the Interest Rate & Change in Amortization Period [Member] | QTD [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	1	0
Balance at time of TDR	3,275	0
Commercial real estate [Member] | Adjusting the Interest Rate & Change in Amortization Period [Member] | YTD [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	1	0
Balance at time of TDR	3,275	0
Residential [Member] | QTD [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	1	1
Balance at time of TDR	49	79
Residential [Member] | YTD [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	3	2
Balance at time of TDR	524	273
Residential [Member] | Granting a Material Extension of Time [Member] | QTD [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	1	0
Balance at time of TDR	49	0
Residential [Member] | Granting a Material Extension of Time [Member] | YTD [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	2	0
Balance at time of TDR	329	0
Residential [Member] | Forbearance Agreement [Member] | QTD [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	0	0
Balance at time of TDR	0	0
Residential [Member] | Forbearance Agreement [Member] | YTD [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	0	0
Balance at time of TDR	0	0
Residential [Member] | Accepting Interest Only for a Period of Time [Member] | QTD [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	0	0
Balance at time of TDR	0	0
Residential [Member] | Accepting Interest Only for a Period of Time [Member] | YTD [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	0	1
Balance at time of TDR	0	194
Residential [Member] | Adjusting the Interest Rate [Member] | QTD [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	0	0
Balance at time of TDR	0	0
Residential [Member] | Adjusting the Interest Rate [Member] | YTD [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	0	0
Balance at time of TDR	0	0
Residential [Member] | Change in Amortization Period [Member] | QTD [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	0	0
Balance at time of TDR	0	0
Residential [Member] | Change in Amortization Period [Member] | YTD [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	0	0
Balance at time of TDR	0	0
Residential [Member] | Adjusting the Interest Rate & Change in Amortization Period [Member] | QTD [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	0	1
Balance at time of TDR	0	79
Residential [Member] | Adjusting the Interest Rate & Change in Amortization Period [Member] | YTD [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	1	1
Balance at time of TDR	195	79
Consumer [Member] | QTD [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	2	0
Balance at time of TDR	664	0
Consumer [Member] | YTD [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	4	0
Balance at time of TDR	859	0
Consumer [Member] | Granting a Material Extension of Time [Member] | QTD [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	2
Balance at time of TDR	664
Consumer [Member] | Granting a Material Extension of Time [Member] | YTD [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	4
Balance at time of TDR	859
Consumer [Member] | Forbearance Agreement [Member] | QTD [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	0
Balance at time of TDR	0
Consumer [Member] | Forbearance Agreement [Member] | YTD [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	0
Balance at time of TDR	0
Consumer [Member] | Accepting Interest Only for a Period of Time [Member] | QTD [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	0
Balance at time of TDR	0
Consumer [Member] | Accepting Interest Only for a Period of Time [Member] | YTD [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	0
Balance at time of TDR	0
Consumer [Member] | Adjusting the Interest Rate [Member] | QTD [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	0
Balance at time of TDR	0
Consumer [Member] | Adjusting the Interest Rate [Member] | YTD [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	0
Balance at time of TDR	0
Consumer [Member] | Change in Amortization Period [Member] | QTD [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	0
Balance at time of TDR	0
Consumer [Member] | Change in Amortization Period [Member] | YTD [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	0
Balance at time of TDR	0
Consumer [Member] | Adjusting the Interest Rate & Change in Amortization Period [Member] | QTD [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	0
Balance at time of TDR	0
Consumer [Member] | Adjusting the Interest Rate & Change in Amortization Period [Member] | YTD [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	0
Balance at time of TDR	$ 0