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Mortgage Banking Activities (Details1) (USD $)
In Thousands, unless otherwise specified
3 Months Ended
Mar. 31, 2013
Mar. 31, 2012
Capitalized mortgage servicing rights    
Beginning balance $ 5,506 $ 6,375
Originations 1,282 531
Amortized to expense (660) (641)
Ending balance 6,128 6,265
Less valuation allowance (245) (837)
Net balance $ 5,883 $ 5,428