Loans, Allowance for Loan Losses and Credit Quality (Modifications which occurred during the period & change in recorded investment) (Details) $ in Thousands	3 Months Ended	6 Months Ended	12 Months Ended
Jun. 30, 2016 USD ($) contract	Jun. 30, 2015 USD ($) contract	Jun. 30, 2016 USD ($) contract	Dec. 31, 2015 USD ($) contract
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts \| contract	17	15	29	26
TROUBLED DEBT RESTRUCTURINGS:
Financing Receivable, Modifications, Pre-Modification Recorded Investment	$ 2,169	$ 3,415	$ 3,558	$ 4,201
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 2,169	$ 3,415	$ 3,600	$ 4,201
Commercial and Industrial [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts \| contract	4	7	7	10
TROUBLED DEBT RESTRUCTURINGS:
Financing Receivable, Modifications, Pre-Modification Recorded Investment	$ 253	$ 1,197	$ 528	$ 1,353
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 253	$ 1,197	$ 528	$ 1,353
Commercial Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts \| contract	4	4	6	5
TROUBLED DEBT RESTRUCTURINGS:
Financing Receivable, Modifications, Pre-Modification Recorded Investment	$ 918	$ 2,071	$ 1,343	$ 2,310
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 918	$ 2,071	$ 1,343	$ 2,310
Small Business [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts \| contract	2	3	2	5
TROUBLED DEBT RESTRUCTURINGS:
Financing Receivable, Modifications, Pre-Modification Recorded Investment	$ 109	$ 116	$ 109	$ 166
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 109	$ 116	$ 109	$ 166
Residential Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts \| contract	3	0	5	3
TROUBLED DEBT RESTRUCTURINGS:
Financing Receivable, Modifications, Pre-Modification Recorded Investment	$ 744	$ 0	$ 1,167	$ 157
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 744	$ 0	$ 1,209	$ 157
Consumer - Home Equity [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts \| contract	3	1	4	3
TROUBLED DEBT RESTRUCTURINGS:
Financing Receivable, Modifications, Pre-Modification Recorded Investment	$ 123	$ 31	$ 304	$ 215
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 123	$ 31	$ 304	$ 215
Consumer - Other [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts \| contract	1		5
TROUBLED DEBT RESTRUCTURINGS:
Financing Receivable, Modifications, Pre-Modification Recorded Investment	$ 22		$ 107
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 22		$ 107

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Number of financing receivables that have been modified by troubled debt restructurings.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 33
-URI http://asc.fasb.org/extlink&oid=66008989&loc=SL6953676-111524

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