Loans - Aging Of Recorded Investment In Past Due 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]
30 - 59 Days Past Due	$ 802	$ 1,183
60 - 89 Days Past Due	223	187
Greater than 90 Days Past Due	1,222	1,815
Total Past Due	2,247	3,185
Loans Not Past Due	170,234	155,095
Nonaccrual Loans Not > 90 Days Past Due	4,343	4,541
Commercial Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
60 - 89 Days Past Due		65
Greater than 90 Days Past Due	165	121
Total Past Due	165	186
Loans Not Past Due	28,359	25,222
Nonaccrual Loans Not > 90 Days Past Due	488	593
Single-family residential [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30 - 59 Days Past Due	796	1,105
60 - 89 Days Past Due	131	122
Greater than 90 Days Past Due	88	74
Total Past Due	1,015	1,301
Loans Not Past Due	45,603	41,757
Nonaccrual Loans Not > 90 Days Past Due	30	39
Multi-family residential [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans Not Past Due	27,109	21,576
Nonaccrual Loans Not > 90 Days Past Due	2,045	2,082
Other consumer [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans Not Past Due	971
Non-owner occupied [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30 - 59 Days Past Due		40
60 - 89 Days Past Due	38
Greater than 90 Days Past Due	957	1,611
Total Past Due	995	1,651
Loans Not Past Due	28,047	28,299
Nonaccrual Loans Not > 90 Days Past Due	570	583
Owner occupied [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans Not Past Due	22,905	19,774
Nonaccrual Loans Not > 90 Days Past Due	1,204	1,244
Land [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans Not Past Due	4,485	4,568
Originated for portfolio [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30 - 59 Days Past Due		20
60 - 89 Days Past Due	54
Greater than 90 Days Past Due	12
Total Past Due	66	20
Loans Not Past Due	10,548	10,699
Purchased for portfolio [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30 - 59 Days Past Due	6
Greater than 90 Days Past Due		9
Total Past Due	6	9
Loans Not Past Due	2,128	2,235
Nonaccrual Loans Not > 90 Days Past Due	6
Construction Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans Not Past Due	79	14
Other consumer [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30 - 59 Days Past Due		18
Total Past Due		18
Loans Not Past Due		$ 951