Loans, Allowance for Loan Losses and Credit Quality (Details 7) (USD $) In Thousands, unless otherwise specified	3 Months Ended				6 Months Ended
	Jun. 30, 2013		Jun. 30, 2012		Jun. 30, 2013	Jun. 30, 2012
TROUBLED DEBT RESTRUCTURINGS:
Number of Contracts	7		19		20	35
Pre-Modification Outstanding Recorded Investment	$ 1,737		$ 5,361		$ 3,732	$ 7,132
Post-Modification Outstanding Recorded Investment(1)	1,737	[1]	5,363	[1]	3,758	7,134
Commercial and Industrial [Member]
TROUBLED DEBT RESTRUCTURINGS:
Number of Contracts	2		7		2	11
Pre-Modification Outstanding Recorded Investment	282		1,115		282	1,273
Post-Modification Outstanding Recorded Investment(1)	282	[1]	1,115	[1]	282	1,273
Commercial Real Estate [Member]
TROUBLED DEBT RESTRUCTURINGS:
Number of Contracts	1		7		2	9
Pre-Modification Outstanding Recorded Investment	664		3,839		1,063	4,907
Post-Modification Outstanding Recorded Investment(1)	664	[1]	3,839	[1]	1,063	4,907
Small Business [Member]
TROUBLED DEBT RESTRUCTURINGS:
Number of Contracts	1		1		5	8
Pre-Modification Outstanding Recorded Investment	18		17		282	360
Post-Modification Outstanding Recorded Investment(1)	18	[1]	17	[1]	282	360
Residential Real Estate [Member]
TROUBLED DEBT RESTRUCTURINGS:
Number of Contracts	2		1		6	2
Pre-Modification Outstanding Recorded Investment	744		261		1,900	378
Post-Modification Outstanding Recorded Investment(1)	744	[1]	261	[1]	1,926	378
Consumer - Home Equity [Member]
TROUBLED DEBT RESTRUCTURINGS:
Number of Contracts	1		1		3	1
Pre-Modification Outstanding Recorded Investment	29		64		194	64
Post-Modification Outstanding Recorded Investment(1)	29	[1]	66	[1]	194	66
Consumer - Other [Member]
TROUBLED DEBT RESTRUCTURINGS:
Number of Contracts	0		2		2	4
Pre-Modification Outstanding Recorded Investment	0		65		11	150
Post-Modification Outstanding Recorded Investment(1)	$ 0	[1]	$ 65	[1]	$ 11	$ 150

[1] The post-modification balances represent the balance of the loan on the date of modifications. These amounts may show an increase when modifications include a capitalization of interest.