Loans Receivable and Allowance for Loan and Lease Losses (Details 4) (USD $) In Thousands, unless otherwise specified	3 Months Ended	6 Months Ended
	Jun. 30, 2012	Jun. 30, 2012
TDRs in compliance with their modified terms and accruing interest [Member]
Summary of loans and leases modified in troubled debt restructurings and the recorded investments and unpaid principal balances
Number of loans and leases modified in troubled debt restructurings	7	9
TDRs that are not accruing interest [Member]
Summary of loans and leases modified in troubled debt restructurings and the recorded investments and unpaid principal balances
Number of loans and leases modified in troubled debt restructurings	1	1
Commercial and industrial [Member] | TDRs in compliance with their modified terms and accruing interest [Member]
Summary of loans and leases modified in troubled debt restructurings and the recorded investments and unpaid principal balances
Number of Loans	0	0
Recorded Investment	0	0
Commercial and industrial [Member] | TDRs that are not accruing interest [Member]
Summary of loans and leases modified in troubled debt restructurings and the recorded investments and unpaid principal balances
Number of Loans	0	0
Recorded Investment	0	0
Commercial real estate [Member] | TDRs in compliance with their modified terms and accruing interest [Member]
Summary of loans and leases modified in troubled debt restructurings and the recorded investments and unpaid principal balances
Number of Loans	0	0
Recorded Investment	0	0
Commercial real estate [Member] | TDRs that are not accruing interest [Member]
Summary of loans and leases modified in troubled debt restructurings and the recorded investments and unpaid principal balances
Number of Loans	0	0
Recorded Investment	0	0
Construction [Member] | TDRs in compliance with their modified terms and accruing interest [Member]
Summary of loans and leases modified in troubled debt restructurings and the recorded investments and unpaid principal balances
Number of Loans	0	0
Recorded Investment	0	0
Construction [Member] | TDRs that are not accruing interest [Member]
Summary of loans and leases modified in troubled debt restructurings and the recorded investments and unpaid principal balances
Number of Loans	0	0
Recorded Investment	0	0
Manufactured housing [Member] | TDRs in compliance with their modified terms and accruing interest [Member]
Summary of loans and leases modified in troubled debt restructurings and the recorded investments and unpaid principal balances
Number of Loans	7	9
Recorded Investment	358	450
Manufactured housing [Member] | TDRs that are not accruing interest [Member]
Summary of loans and leases modified in troubled debt restructurings and the recorded investments and unpaid principal balances
Number of Loans	0	0
Recorded Investment	0	0
Residential real estate [Member] | TDRs in compliance with their modified terms and accruing interest [Member]
Summary of loans and leases modified in troubled debt restructurings and the recorded investments and unpaid principal balances
Number of Loans	0	0
Recorded Investment	0	0
Residential real estate [Member] | TDRs that are not accruing interest [Member]
Summary of loans and leases modified in troubled debt restructurings and the recorded investments and unpaid principal balances
Number of Loans	1	1
Recorded Investment	145	145
Consumer [Member] | TDRs in compliance with their modified terms and accruing interest [Member]
Summary of loans and leases modified in troubled debt restructurings and the recorded investments and unpaid principal balances
Number of Loans	0	0
Recorded Investment	0	0
Consumer [Member] | TDRs that are not accruing interest [Member]
Summary of loans and leases modified in troubled debt restructurings and the recorded investments and unpaid principal balances
Number of Loans	0	0
Recorded Investment	0	0