Loans - Recorded Investment In Nonaccrual Loans By Class Of Loans (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total nonaccrual and nonperforming loans	$ 5,565	$ 6,356
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing
Total Nonaccrual [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total nonaccrual and nonperforming loans	5,565	6,356
Real Estate [Member] | Non-owner occupied [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total nonaccrual and nonperforming loans	1,527	2,195
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing
Real Estate [Member] | Owner occupied [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total nonaccrual and nonperforming loans	1,204	1,243
Real Estate [Member] | Land [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total nonaccrual and nonperforming loans
Real Estate [Member] | Other consumer [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing
Commercial Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total nonaccrual and nonperforming loans	653	714
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing
Single-family residential [Member] | Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total nonaccrual and nonperforming loans	119	113
Multi-family residential [Member] | Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total nonaccrual and nonperforming loans	2,044	2,082
Home equity lines of credit [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total nonaccrual and nonperforming loans
Home equity lines of credit [Member] | Consumer [Member] | Originated for portfolio [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total nonaccrual and nonperforming loans	12
Home equity lines of credit [Member] | Consumer [Member] | Purchased for portfolio [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total nonaccrual and nonperforming loans	6	9
Home equity lines of credit [Member] | Consumer [Member] | Other consumer [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total nonaccrual and nonperforming loans