Federal Home Loan Bank Borrowings FHLB Text (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Federal Home Loan Bank, Advances, General Debt Obligations, Disclosures, Collateral Pledged	$ 1,800,000,000	$ 1,800,000,000
Federal Home Loan Bank borrowings	367,254,000	408,121,000
Federal Home Loan Bank, Advances, General Debt Obligations, Maximum Amount Available	836,500,000	794,400,000
FHLB Borrowings Callable Before Maturity	38,000,000	43,000,000
Federal Home Loan Bank Minimum Stock Ownership as a Percent of Outstanding Advances	4.50%
Stock in Federal Home Loan Banks	38,612,000	41,981,000
Federal Home Loan Bank of Boston [Member]
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Stock in Federal Home Loan Banks	$ 30,800,000	$ 30,300,000
Minimum [Member]
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Collateral Percentage Allowed Based on Type of Collateral	50.00%
Maximum [Member]
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Collateral Percentage Allowed Based on Type of Collateral	75.00%

Collateral Percentage Allowed Based on Type of Collateral

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- Definition

Federal Home Loan Bank Minimum Stock Ownership as a Percent of Outstanding Advances

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- Definition

FHLB Borrowings Callable Before Maturity

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Amount of the collateral pledged in support of federal home loan bank advances outstanding.

+ References

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- Definition

Amount of maximum advances or credit lines available from the Federal Home Loan Bank (FHLB).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 470

-Section 45

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-Publisher SEC

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-Number 210

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Including both current and noncurrent portions, Federal Home Loan Bank borrowings initially due beyond one year or beyond the normal operating cycle if longer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

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-SubTopic 470

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Federal Home Loan Bank (FHLB) stock represents an equity interest in a FHLB. It does not have a readily determinable fair value because its ownership is restricted and it lacks a market (liquidity).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

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