Non-Performing Loans and Impaired Loans (Details 1) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012 NoOfDefaults	Sep. 30, 2011 NoOfDefaults
Loans transferred and classified as troubled debt restructuring
Number of Defaults	7	11
Unpaid Principal Balance	$ 2,691	$ 1,739
Commercial [Member]
Loans transferred and classified as troubled debt restructuring
Number of Defaults	6	1
Unpaid Principal Balance	2,109	841
Commercial [Member] | Owner occupied real estate [Member]
Loans transferred and classified as troubled debt restructuring
Number of Defaults	3
Unpaid Principal Balance	1,472
Commercial [Member] | Non owner occupied real estate [Member]
Loans transferred and classified as troubled debt restructuring
Number of Defaults	3
Unpaid Principal Balance	637
Commercial [Member] | Residential development [Member]
Loans transferred and classified as troubled debt restructuring
Number of Defaults
Unpaid Principal Balance
Commercial [Member] | Development & Spec Land Loans [Member]
Loans transferred and classified as troubled debt restructuring
Number of Defaults
Unpaid Principal Balance
Commercial [Member] | Commercial and industrial [Member]
Loans transferred and classified as troubled debt restructuring
Number of Defaults		1
Unpaid Principal Balance		841
Real estate [Member]
Loans transferred and classified as troubled debt restructuring
Number of Defaults	1	2
Unpaid Principal Balance	582	174
Real estate [Member] | Residential mortgage [Member]
Loans transferred and classified as troubled debt restructuring
Number of Defaults	1	2
Unpaid Principal Balance	582	174
Real estate [Member] | Residential construction [Member]
Loans transferred and classified as troubled debt restructuring
Number of Defaults
Unpaid Principal Balance
Real estate [Member] | Mortgage warehouse [Member]
Loans transferred and classified as troubled debt restructuring
Number of Defaults
Unpaid Principal Balance
Consumer [Member]
Loans transferred and classified as troubled debt restructuring
Number of Defaults		8
Unpaid Principal Balance		724
Consumer [Member] | Direct Installment [Member]
Loans transferred and classified as troubled debt restructuring
Number of Defaults
Unpaid Principal Balance
Consumer [Member] | Direct Installment Purchased [Member]
Loans transferred and classified as troubled debt restructuring
Number of Defaults
Unpaid Principal Balance
Consumer [Member] | Indirect Installment [Member]
Loans transferred and classified as troubled debt restructuring
Number of Defaults
Unpaid Principal Balance
Consumer [Member] | Home Equity [Member]
Loans transferred and classified as troubled debt restructuring
Number of Defaults		8
Unpaid Principal Balance		$ 724