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Fair Value Measurements (Details) (USD $)
In Thousands, unless otherwise specified
Jun. 30, 2014
Dec. 31, 2013
Fair Value Disclosures [Abstract]    
Transfers into or out of Levels 1-3 $ 0 $ 0
Assets:    
Available for sale debt securities, fair value 215,653 205,985
Mortgage servicing rights, fair value 2,911 3,036
Quoted Prices in Active Markets for Identical Assets (Level 1)
    
Assets:    
Available for sale debt securities, fair value   1,003
Assets, Total 38,991 34,441
Other Observable Inputs (Level 2)
    
Assets:    
Available for sale debt securities, fair value 215,653 204,982
Assets, Total 220,219 209,549
Significant Unobservable Inputs (Level 3)
    
Assets:    
Mortgage servicing rights, fair value 2,911 3,036
Assets, Total 850,155 832,259
Recurring
    
Assets:    
Assets, Total 218,564 209,021
Recurring | U.S. Treasury
    
Assets:    
Assets, Total   1,003
Recurring | Government sponsored enterprises
    
Assets:    
Available for sale debt securities, fair value 68,048 60,616
Recurring | Asset-backed securities
    
Assets:    
Available for sale debt securities, fair value 114,738 110,373
Recurring | Obligations of states and political subdivisions
    
Assets:    
Available for sale debt securities, fair value 32,867 33,993
Recurring | Mortgage servicing rights
    
Assets:    
Mortgage servicing rights, fair value 2,911 3,036
Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1)
    
Assets:    
Assets, Total   1,003
Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | U.S. Treasury
    
Assets:    
Assets, Total   1,003
Recurring | Other Observable Inputs (Level 2)
    
Assets:    
Assets, Total   204,982
Recurring | Other Observable Inputs (Level 2) | Government sponsored enterprises
    
Assets:    
Available for sale debt securities, fair value 68,048 60,616
Recurring | Other Observable Inputs (Level 2) | Asset-backed securities
    
Assets:    
Available for sale debt securities, fair value 114,738 110,373
Recurring | Other Observable Inputs (Level 2) | Obligations of states and political subdivisions
    
Assets:    
Available for sale debt securities, fair value 32,867 33,993
Recurring | Significant Unobservable Inputs (Level 3)
    
Assets:    
Assets, Total   3,036
Recurring | Significant Unobservable Inputs (Level 3) | Mortgage servicing rights
    
Assets:    
Mortgage servicing rights, fair value $ 2,911 $ 3,036