Loans and Leases - Acquired Credit Impaired Loans (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2015	Dec. 31, 2014
Receivables [Abstract]
Outstanding principal balance	$ 6,235
Carrying amount	1,876	$ 0
Allowance for loan losses	0
Certain Loans Acquired in Transfer Accounted for as Debt Securities, Accretable Yield Movement Schedule [Roll Forward]
Beginning of period	0
Acquisition of credit impaired loans	352
Accretable yield amortized to interest income	(82)
End of period	$ 270