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Commitments and Contingencies (Tables)
 9 Months Ended
Sep. 30, 2015
Commitments and Contingencies Disclosure [Abstract]  
Schedule of contractual amount of off-balance-sheet financial instruments
    September 30,     December 31,  
(in thousands)   2015     2014  
Commitments to extend credit   $ 147,341     $ 135,137  
Commitments to originate residential first and second mortgage loans     5,097       1,640  
Standby letters of credit     1,432       1,621  
Total     153,870       138,398