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Fair Value - Financial Instruments Measured At Fair Value On A Non-Recurring Basis (Details) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2013 | Dec. 31, 2012
Single-family residential [Member] |  |
Impaired loans: |  |
Impaired loans at Fair Value | $ 84 | $ 57
Impaired loans: |  |
Valuation Technique(s) | Comparable sales approach | Comparable sales approach
Fair Value Inputs, Adjustment for differences between the comparable market transactions | 2.30% | 2.30%
Multi-family residential [Member] |  |
Impaired loans: |  |
Impaired loans at Fair Value | 1,972 | 2,070
Impaired loans: |  |
Valuation Technique(s) | Comparable sales approach | Comparable sales approach
Fair Value Inputs, Adjustment for differences between the comparable market transactions | (32.70%) | (32.70%)
Non-owner occupied [Member] |  |
Impaired loans: |  |
Impaired loans at Fair Value | 1,527 | 1,806
Impaired loans: |  |
Valuation Technique(s) | Comparable sales approach | Comparable sales approach
Fair Value Inputs, Adjustment for differences between the comparable market transactions | (1.25%) | 7.30%
Owner occupied [Member] |  |
Impaired loans: |  |
Impaired loans at Fair Value | 1,204 | 1,244
Impaired loans: |  |
Valuation Technique(s) | Comparable sales approach | Comparable sales approach
Fair Value Inputs, Adjustment for differences between the comparable market transactions | (0.80%) | (0.80%)
Commercial Segment [Member] |  |
Impaired loans: |  |
Impaired loans at Fair Value | $ 121 | $ 121
Impaired loans: |  |
Valuation Technique(s) | Income approach | Income approach
Fair Value Inputs, Adjustment for differences in net operating income expectations | (10.00%) | (10.00%)
Minimum [Member] | Multi-family residential [Member] |  |
Impaired loans: |  |
Fair Value Inputs, Adjustment for differences between the comparable market transactions | (39.00%) | (39.00%)
Minimum [Member] | Non-owner occupied [Member] |  |
Impaired loans: |  |
Fair Value Inputs, Adjustment for differences between the comparable market transactions | (9.74%) | (12.20%)
Minimum [Member] | Owner occupied [Member] |  |
Impaired loans: |  |
Fair Value Inputs, Adjustment for differences between the comparable market transactions | (6.30%) | 0.50%
Maximum [Member] | Multi-family residential [Member] |  |
Impaired loans: |  |
Fair Value Inputs, Adjustment for differences between the comparable market transactions | (27.10%) | (27.10%)
Maximum [Member] | Non-owner occupied [Member] |  |
Impaired loans: |  |
Fair Value Inputs, Adjustment for differences between the comparable market transactions | 9.18% | 16.70%
Maximum [Member] | Owner occupied [Member] |  |
Impaired loans: |  |
Fair Value Inputs, Adjustment for differences between the comparable market transactions | 0.50% | 6.30%

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- Definition Fair value inputs net comparable market transactions difference adjustments. + References No definition available. + Details
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- Definition Fair value inputs net operating income expectations difference adjustments. + References No definition available. + Details
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- Definition Description of the inputs and valuation technique(s) used to measure fair value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bbb) -URI http://asc.fasb.org/extlink&oid=7578670&loc=d3e19207-110258 + Details
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