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Purchased Loans (Details 9) - Purchased loans
$ in Thousands
6 Months Ended
Jun. 30, 2017
USD ($)
Changes in accretable yield of loans acquired with deteriorated credit quality  
Balance at January 1, 2017 $ (36,326)
Additions through acquisition 0
Reclasses from nonaccretable difference 294
Accretion 6,035
Charge-offs 741
Balance at June 30, 2017 $ (29,256)