Loans and Leases - Acquired Credit Impaired Loans (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2016	Dec. 31, 2015
Receivables [Abstract]
Outstanding principal balance	$ 1,814	$ 3,551
Carrying amount	942	1,253
Allowance for loan losses	0	$ 8
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield Movement Schedule [Roll Forward]
Beginning of period	144
Reclassification from nonaccretable difference	133
Accretable yield amortized to interest income	(184)
Disposals	(34)
End of period	$ 59