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Purchased Loans (Details 9) - Purchased loans
$ in Thousands
3 Months Ended
Mar. 31, 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 (657)
Accretion 3,263
Charge-offs 381
Balance at March 31, 2017 $ (32,025)