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Securities (Details 2) (USD $)
In Thousands, unless otherwise specified
Jun. 30, 2012
Dec. 31, 2011
Jun. 30, 2011
Securities Details 2      
Due within one year $ 3,004    
Due after one year but within five years 26,497    
Due after five years but within ten years 3,000    
Due after ten years 10,189    
Mortgage-backed securities 115,674    
Total debt securities 158,364    
Equity securities 9,195    
Total securities 167,559 178,730  
Due within one year 3,040    
Due after one year but within five years 26,679    
Due after five years but within ten years 3,000    
Due after ten years 10,046    
Mortgage-backed securities 119,536    
Total debt securities 162,301    
Equity securities 9,606    
Total securities 171,907 182,626 171,844
Due within one year 350    
Due after one year but within five years 2,958    
Due after five years but within ten years 29,731    
Due after ten years 23,143    
Mortgage-backed securities       
Total debt securities 56,182    
Total securities 56,182 57,988 57,593
Due within one year 358    
Due after one year but within five years 3,210    
Due after five years but within ten years 32,673    
Due after ten years 25,435    
Total debt securities 61,676    
Total securities $ 61,676 $ 62,754 $ 59,860