Borrowings (Federal Home Loan Bank Advances Maturity Schedule) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013		Dec. 31, 2012
Federal Home Loan Bank, Advances, Fiscal Year Maturity [Abstract]
FHLB Advances	$ 288,082		$ 361,172
Federal Home Loan Bank of Boston [Member]
Federal Home Loan Bank, Advances, Fiscal Year Maturity [Abstract]
Scheduled Maturity, next 12 months	2,519
Scheduled Maturity, year two	1,569
Scheduled Maturity, year three	85,066
Scheduled Maturity, year four	70,875
Scheduled Maturity, year five	77,303
Scheduled Maturity, thereafter	50,750
FHLB Advances	288,082		361,172
Federal Home Loan Bank, Advances, Maturities Summary, Redeemed Call Date of Amounts Due [Abstract] [Abstract]
Redeemed at Call Date, next 12 months	2,519	[1]
Redeemed at Call Date, year two	1,569	[1]
Redeemed at Call Date, year three	85,066	[1]
Redeemed at Call Date, year four	70,875	[1]
Redeemed at Call Date, year five	77,303	[1]
Redeemed at Call Date, thereafter	50,750	[1]
Redeemed at Call Date, Total	$ 288,082	[1]
Federal Home Loan Bank, Advances, Maturities Summary, Average Interest Rate of Amounts Due [Abstract]
Weighted Average Rate, next 12 months	3.54%	[2]
Weighted Average Rate, year two	4.89%	[2]
Weighted Average Rate, year three	3.05%	[2]
Weighted Average Rate, year four	3.04%	[2]
Weighted Average Rate, year five	3.72%	[2]
Weighted Average Rate, thereafter	4.13%	[2]
Weighted Average Rate, Total	3.43%	[2]

[1] Callable FHLBB advances are shown in the respective periods assuming that the callable debt is redeemed at the call date while all other advances are shown in the periods corresponding to their scheduled maturity date.

[2] Weighted average rate based on scheduled maturity dates.