Quarterly report pursuant to Section 13 or 15(d)

Fair Value Fair Value, Option, Quantitative Disclosures - changes included in net income (Details)

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Fair Value Fair Value, Option, Quantitative Disclosures - changes included in net income (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended
Mar. 31, 2012
Dec. 31, 2011
Mar. 31, 2011
Dec. 31, 2010
Fair Value, Option, Quantitative Disclosures [Line Items]        
Mortgage loans held-for-sale, at fair value $ 5,711 $ 5,782 $ 0 $ 0
Fair Value, Option, Changes in Fair Value, Gain (Loss) (45)      
Fair Value, Option, Total Income 24      
Fair Value, Option, Credit Risk, Gains (Losses) on Assets 0      
Loans Receivable [Member]
       
Fair Value, Option, Quantitative Disclosures [Line Items]        
Fair Value, Option, Interest Income (Expense) 69      
Fair Value, Option, Changes in Fair Value, Gain (Loss) (45)      
Fair Value, Option, Total Income 24      
Fair Value, Option, Credit Risk, Gains (Losses) on Assets 0      
Loans Held-for-Sale, Mortgages, Fair Value Adjustment [Member]
       
Fair Value, Option, Quantitative Disclosures [Line Items]        
Mortgage loans held-for-sale, at fair value $ 5,711 $ 5,782