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Intangible Assets (Detail Textuals) - Mortgage Service Rights - USD ($)
3 Months Ended 6 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Jun. 30, 2015
Jun. 30, 2014
Dec. 31, 2014
Mortgage Servicing Rights          
Mortgage loans serviced for others $ 312,600,000 $ 315,300,000 $ 312,600,000 $ 315,300,000 $ 313,900,000
Mortgage loan servicing fees reported as other non-interest income $ 228,000 $ 223,000 $ 442,000 $ 446,000