Loans and Credit Quality - Newly Restructured Loans (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2015 USD ($) Contract
Financing Receivable, Modifications [Line Items]
Pre-modification, number of contracts | Contract	6
Pre-modification, total modification	$ 10,064
Post-modification, number of contracts | Contract	6
Post-modification, total modification	$ 10,178
Commercial | Asset Quality Rating - Substandard
Financing Receivable, Modifications [Line Items]
Pre-modification, number of contracts | Contract	6
Pre-modification, total modification	$ 10,064
Post-modification, number of contracts | Contract	6
Post-modification, total modification	$ 10,178
Contractual Interest Rate Reduction [Member]
Financing Receivable, Modifications [Line Items]
Pre-modification, total modification	0
Post-modification, total modification	0
Contractual Interest Rate Reduction [Member] | Commercial | Asset Quality Rating - Substandard
Financing Receivable, Modifications [Line Items]
Pre-modification, total modification	0
Post-modification, total modification	0
Extended Maturity [Member]
Financing Receivable, Modifications [Line Items]
Pre-modification, total modification	8,891
Post-modification, total modification	8,891
Extended Maturity [Member] | Commercial | Asset Quality Rating - Substandard
Financing Receivable, Modifications [Line Items]
Pre-modification, total modification	8,891
Post-modification, total modification	8,891
Payment Deferral [Member]
Financing Receivable, Modifications [Line Items]
Pre-modification, total modification	0
Post-modification, total modification	0
Payment Deferral [Member] | Commercial | Asset Quality Rating - Substandard
Financing Receivable, Modifications [Line Items]
Pre-modification, total modification	0
Post-modification, total modification	0
Combination Modification [Member]
Financing Receivable, Modifications [Line Items]
Pre-modification, total modification	1,173
Post-modification, total modification	1,287
Combination Modification [Member] | Commercial | Asset Quality Rating - Substandard
Financing Receivable, Modifications [Line Items]
Pre-modification, total modification	1,173
Post-modification, total modification	$ 1,287