Loans, Allowance for Loan Losses and Credit Quality (Impaired Loans by Portfolio) (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Impaired loans by loan portfolio
Related Allowance	$ 2,730	$ 3,774
Impaired Financing Receivable, Recorded Investment, Total	61,070	72,055
Impaired Financing Receivable, Unpaid Principal Balance	65,071	75,817
WITH NO RELATED ALLOWANCE RECORDED: [Member]
Impaired loans by loan portfolio
Recorded Investment	28,523	29,685
Unpaid Principal Balance	30,112	32,186
Related Allowance
WITH AN ALLOWANCE RECORDED: [Member]
Impaired loans by loan portfolio
Recorded Investment	32,547	42,370
Unpaid Principal Balance	34,959	43,631
Related Allowance	2,730	3,774
Commercial and Industrial [Member] | WITH NO RELATED ALLOWANCE RECORDED: [Member]
Impaired loans by loan portfolio
Recorded Investment	4,296	7,147
Unpaid Principal Balance	4,842	7,288
Related Allowance
Commercial and Industrial [Member] | WITH AN ALLOWANCE RECORDED: [Member]
Impaired loans by loan portfolio
Recorded Investment	2,500	2,001
Unpaid Principal Balance	2,954	2,045
Related Allowance	472	1,150
Commercial Real Estate [Member] | WITH NO RELATED ALLOWANCE RECORDED: [Member]
Impaired loans by loan portfolio
Recorded Investment	16,055	14,283
Unpaid Principal Balance	16,935	15,891
Related Allowance
Commercial Real Estate [Member] | WITH AN ALLOWANCE RECORDED: [Member]
Impaired loans by loan portfolio
Recorded Investment	14,417	25,233
Unpaid Principal Balance	15,005	25,377
Related Allowance	292	765
Commercial Construction [Member] | WITH NO RELATED ALLOWANCE RECORDED: [Member]
Impaired loans by loan portfolio
Recorded Investment		100
Unpaid Principal Balance		408
Related Allowance
Small Business [Member] | WITH NO RELATED ALLOWANCE RECORDED: [Member]
Impaired loans by loan portfolio
Recorded Investment	1,035	1,474
Unpaid Principal Balance	1,068	1,805
Related Allowance
Small Business [Member] | WITH AN ALLOWANCE RECORDED: [Member]
Impaired loans by loan portfolio
Recorded Investment	439	429
Unpaid Principal Balance	480	462
Related Allowance	45	109
Residential Real Estate [Member] | WITH NO RELATED ALLOWANCE RECORDED: [Member]
Impaired loans by loan portfolio
Recorded Investment	2,409	1,972
Unpaid Principal Balance	2,494	2,026
Related Allowance
Residential Real Estate [Member] | WITH AN ALLOWANCE RECORDED: [Member]
Impaired loans by loan portfolio
Recorded Investment	13,420	13,228
Unpaid Principal Balance	14,660	14,197
Related Allowance	1,599	1,564
Consumer - Home Equity [Member] | WITH NO RELATED ALLOWANCE RECORDED: [Member]
Impaired loans by loan portfolio
Recorded Investment	4,374	4,263
Unpaid Principal Balance	4,418	4,322
Related Allowance
Consumer - Home Equity [Member] | WITH AN ALLOWANCE RECORDED: [Member]
Impaired loans by loan portfolio
Recorded Investment	1,099	627
Unpaid Principal Balance	1,186	694
Related Allowance	273	116
Consumer - Other [Member] | WITH NO RELATED ALLOWANCE RECORDED: [Member]
Impaired loans by loan portfolio
Recorded Investment	354	446
Unpaid Principal Balance	355	446
Related Allowance
Consumer - Other [Member] | WITH AN ALLOWANCE RECORDED: [Member]
Impaired loans by loan portfolio
Recorded Investment	672	852
Unpaid Principal Balance	674	856
Related Allowance	$ 49	$ 70