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Investment Securities Additional Information (Details) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2014 state security | Mar. 31, 2013 security | Dec. 31, 2013 security
Investments, Debt and Equity Securities [Abstract] |  |  |
Available-for-sale Securities Pledged as Collateral | $ 132,657 | $ 131,155 | $ 147,074
Number of securities temporarily impaired | 268 | 116 | 304
Number of securities temporarily impaired | 73 | 7 | 32
Length of time securities temporarily impaired | 12 months | 12 months | 12 months
Number of states in New England where FHLB serve | 6 |  |
Federal Home Loan Bank Stock | $ 12,875 | $ 12,875 | $ 12,875

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- Definition The number of securities with unrealized losses, classified as temporarily impaired, held in a Company's portfolio as of the balance sheet date. + References No definition available. + Details
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- Definition The number of securities temporarily impaired as of the balance sheet date for a period of 12 months or more. + References No definition available. + Details
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- Definition The number of States in New England where Federal Home Loan Bank do housing and financing services. + References No definition available. + Details
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- Definition The fair value of available-for-sale securities that serve as collateral for borrowings. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5086-111524 + Details
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- Definition 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 -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 325 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6478792&loc=d3e63345-112809 + Details
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