| **Borrowed Funds (Details) (USD $)**                                                                           | 12 Months Ended |               |             |             |             |             |             |
|----------------------------------------------------------------------------------------------------------------|-----------------|---------------|-------------|-------------|-------------|-------------|-------------|
||
| **Borrowed Funds [Abstract]**                                                                                  |            |          |        |        |        |        |        |   |
| Federal Home Loan Bank, Advances, General Debt Obligations, Disclosures, Maximum Amount Available              | $ 248,933,000   |          |        |        |        |        |        |   |
| Federal Home Loan Bank, Advances, General Debt Obligations, Disclosures, Amount of Available, Unused Funds     | 67,532,000      |          |        |        |        |        |        |   |
| **Disclosure of Repurchase Agreements [Abstract]**                                                             |            |          |        |        |        |        |        |   |
| Repurchase Agreements for municipal and commercial customers                                                   | 101,504,000     | 90,515,000    |        |        |        |        |        |   |
| Total                                                                                                          | 282,905,000     | 265,663,000   | 304,749,000 | 248,926,000 | 240,151,000 | 255,616,000 | 249,336,000 | 217,534,000 |
| Municipal and commercial customers (in hundredths)                                                             | 0.20%-1.89%     | 0.40%-2.09%   |        |        |        |        |        |   |
| Range of Repurchase agreements' maturity dates                                                                 | one to 365      |          |        |        |        |        |        |   |
| Amount of Line of credit with correspondent banks                                                              |            | 48,000,000    |        |        |        |        |        |   |
| Credit facility with Federal Reserve Bank                                                                      | 115,839,000     |          |        |        |        |        |        |   |
| **Federal Home Loan Bank, Advances, Maturities Summary [Abstract]**                                            |            |          |        |        |        |        |        |   |
| 2013 Maturity                                                                                                  | 41,245,000      | 0             |        |        |        |        |        |   |
| 2014 Maturity                                                                                                  | 10,000,000      | 10,000,000    |        |        |        |        |        |   |
| 2015 Maturity                                                                                                  | 40,000,000      | 40,000,000    |        |        |        |        |        |   |
| 2016 Maturity                                                                                                  | 30,000,000      | 30,000,000    |        |        |        |        |        |   |
| 2017 Maturity                                                                                                  | 30,000,000      | 50,163,000    |        |        |        |        |        |   |
| 2018 and thereafter                                                                                            | 30,156,000      |          |        |        |        |        |        |   |
| Total                                                                                                          | $ 181,401,000   | $ 175,148,000 |        |        |        |        |        |   |
| **Federal Home Loan Bank, Advances, Maturities Summary by Interest Rate Type, Interest Rate Range [Abstract]** |            |          |        |        |        |        |        |   |
| 2013 (in hundredths)                                                                                           | 0.16%-0.31%     | -             |        |        |        |        |        |   |
| 2016 (in hundredths)                                                                                           | 2.36%-2.44%     | 1.31%-1.39%   |        |        |        |        |        |   |
| 2017 (in hundredths)                                                                                           | 0.99%-3.69%     | 0.00%-3.69%   |        |        |        |        |        |   |
| 2018 and thereafter (in hundredths)                                                                            | 0.00%-3.25%     |          |        |        |        |        |        |   |

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Maximum borrowing capacity under the credit facility with Federal Reserve Bank of Boston using commercial and home equity loans as collateral.
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Represents the range of interest rates from lowest to highest that are applicable to Federal Home Loan Bank advances due five years from the balance sheet date.
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Represents the range of interest rates from lowest to highest that are applicable to Federal Home Loan Bank advances due four years from the balance sheet date.
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Borrowing capacity under the credit lines established with correspondent banks.
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Represents the aggregate dollar amount of all future maturities of advances from the Federal Home Loan Bank, treasury tax and loan notes and securities sold under repurchase agreements as of balance sheet date.
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|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
States the total dollar amount of advances or credit lines available as of the Balance Sheet date from the Federal Home Loan Bank system.
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| - Definition
States the maximum total dollar amount of advances or credit lines available as of the Balance Sheet date from the Federal Home Loan Bank system.
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|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Represents the aggregate dollar amount of all future maturities of Federal Home Loan Bank advances from the Balance Sheet date. This amount would be expected to agree to the sum total of the related Balance Sheet and footnote disclosures.
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| - Definition
Represents the range of interest rates from lowest to highest that are applicable to Federal Home Loan Bank advances due after five years from the balance sheet date.
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|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Represents the range of interest rates from lowest to highest that are applicable to Federal Home Loan Bank advances due within one year of the Balance Sheet date.
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| - Definition
Amount of Federal Home Loan Bank advances outstanding which are due after five years of the Balance Sheet date.
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| - Definition
Amount of Federal Home Loan Bank advances outstanding which are due from four to five years of the Balance Sheet date.
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Amount of Federal Home Loan Bank advances outstanding which are due from one to two years of the Balance Sheet date.
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| - Definition
Amount of Federal Home Loan Bank advances outstanding which are due from three to four years of the Balance Sheet date.
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| - Definition
Amount of Federal Home Loan Bank advances outstanding which are due from two to three years of the Balance Sheet date.
+ References
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| - Definition
Amount of Federal Home Loan Bank advances outstanding which are due within one year of the Balance Sheet date.
+ References
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| - Definition
This describes the time frame of the terms of the entity's repurchase agreements.
+ References
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| - Definition
The carrying value as of the balance sheet date of securities that an institution sells and agrees to repurchase (the identical or substantially the same securities) as a seller-borrower at a specified date for a specified price, also known as a repurchase agreement, or repo. Most repos involve obligations of the federal government or its agencies, but other financial instruments, such as commercial paper, banker's acceptances, and negotiable certificates of deposit, are sometimes used in repos.
+ References
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