Loans and the Allowance for Loan and Lease Losses (Details) - Purchase credit impaired loans - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Loans and the Allowance for Loan and Lease Losses (Details) - Purchase credit impaired loans [Line Items]
Total carrying amount	$ 8,080	$ 9,181
Commercial Portfolio Segment [Member]
Loans and the Allowance for Loan and Lease Losses (Details) - Purchase credit impaired loans [Line Items]
Total carrying amount	7,098	7,078
Commercial Real Estate Portfolio Segment [Member]
Loans and the Allowance for Loan and Lease Losses (Details) - Purchase credit impaired loans [Line Items]
Total carrying amount	982	1,775
Construction Loans [Member]
Loans and the Allowance for Loan and Lease Losses (Details) - Purchase credit impaired loans [Line Items]
Total carrying amount
Residential Portfolio Segment [Member]
Loans and the Allowance for Loan and Lease Losses (Details) - Purchase credit impaired loans [Line Items]
Total carrying amount		328
Consumer Portfolio Segment [Member]
Loans and the Allowance for Loan and Lease Losses (Details) - Purchase credit impaired loans [Line Items]
Total carrying amount