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Commitments and Contingencies (Tables)
6 Months Ended
Jun. 30, 2017
Commitments and Contingencies Disclosure [Abstract]  
Schedule of contractual amount of off-balance-sheet financial instruments
  June 30,  December 31, 
(in thousands) 2017  2016 
Commitments to extend credit $220,119  $253,375 
Commitments to originate residential first and second mortgage loans  4,572   2,626 
Standby letters of credit  57,018   2,745 
Total  281,709   258,746