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Commitments and Contingencies (Tables)
 12 Months Ended
Dec. 31, 2016
Commitments and Contingencies Disclosure [Abstract]  
Schedule of contractual amount of off-balance-sheet financial instruments
(in thousands)
    
2016
    
2015
  
Commitments to extend credit       $ 253,375         $ 161,306    
Commitments to originate residential first and second mortgage loans         2,626           3,175    
Standby letters of credit         2,745           1,466    
Total
       $ 258,746         $ 165,947