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Loans and Allowance for Loan and Lease Losses - Schedule of Changes in Accretable Yield for the PCI Loans (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2016
Mar. 31, 2015
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield Movement Schedule [Roll Forward]    
Accretable yield, beginning balance $ 2,594 $ 4,977
Accretion (517) (429)
Disposals (13) (52)
Accretable yield, ending balance $ 2,064 $ 4,496