| **Fair Value Disclosures (Tables)**                                           | 3 Months Ended                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         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| **Fair Value Disclosures [Abstract]**                                         |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     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| Assets and liabilities measured on recurring basis measured at fair value     | The following table presents the balances of assets and liabilities that were measured at fair value on a recurring basis as of March 31, 2012, December 31, 2011 and March 31, 2011.   At March 31, 2012    Level 1  Level 2  Level 3  Total Securities available for sale               U.S. Treasury and agency $-  $-  $-  $-    Mortgage-backed securities  -   232,115,000   -   232,115,000    State and political subdivisions  -   83,162,000   -   83,162,000    Other equity securities  -   1,834,000   -   1,834,000 Total assets $-  $317,111,000  $-  $317,111,000    At December 31, 2011    Level 1  Level 2  Level 3  Total Securities available for sale               U.S. Treasury and agency $-  $-  $-  $-    Mortgage-backed securities  -   198,232,000   -   198,232,000    State and political subdivisions  -   85,726,000   -   85,726,000    Corporate securities  -   811,000   -   811,000    Other equity securities  -   1,433,000   -   1,433,000 Total assets $-  $286,202,000  $-  $286,202,000    At March 31, 2011    Level 1  Level 2  Level 3  Total Securities available for sale               U.S. Treasury and agency $-  $15,943,000  $-  $15,943,000    Mortgage-backed securities  -   253,110,000   -   253,110,000    State and political subdivisions  -   55,081,000   -   55,081,000    Corporate securities  -   923,000   -   923,000    Other equity securities  -   394,000   -   394,000 Total assets $-  $325,451,000  $-  $325,451,000                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |
| Assets and liabilities measured on non-recurring basis measured at fair value | The following tables includes asset measured at fair value on a nonrecurring basis that have had a fair value adjustment since their initial recognition. Other real estate owned is presented net of an allowance of $367,000,$436,000, and $108,000 at March 31, 2012, December 31, 2011, and March 31, 2011, respectively. Impaired loans measured at fair value only include impaired loans with a related specific allowance for loan losses and are presented net of specific allowances of $2,348,000, $2,058,000 and $1,621,000 at March 31, 2012, December 31, 2011, and March 31, 2011, respectively.   At March 31, 2012    Level 1  Level 2  Level 3  Total Mortgage servicing rights $-  $994,000  $-  $994,000 Loans held for sale  -   184,000   -   184,000 Other real estate owned  -   4,214,000   -   4,214,000 Impaired loans  -   12,082,000   -   12,082,000 Total assets $-  $17,474,000  $-  $17,474,000    At December 31, 2011    Level 1  Level 2  Level 3  Total Mortgage servicing rights $-  $1,581,000  $-  $1,581,000 Loans held for sale  -   -   -   - Other real estate owned  -   4,094,000   -   4,094,000 Impaired loans  -   12,165,000   -   12,165,000 Total assets $-  $17,840,000  $-  $17,840,000    At March 31, 2011    Level 1  Level 2  Level 3  Total Mortgage servicing rights $-  $2,205,000  $-  $2,205,000 Loans held for sale  -   450,000   -   450,000 Other real estate owned  -   4,575,000   -   4,575,000 Impaired loans  -   7,002,000   -   7,002,000 Total assets $-  $14,232,000  $-  $14,232,000                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     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| Estimated fair value of financial instruments                                 | The estimated fair values for financial instruments as of March 31, 2012 were as follows:   Carrying  Estimated             value  fair value  Level 1  Level 2  Level 3 Financial assets               Cash and cash equivalents $12,123,000  $12,123,000  $12,123,000  $-  $- Interest bearing deposits in other banks  1,532,000   1,532,000   1,532,000   -   - Securities available for sale  317,111,000   317,111,000   -   317,111,000   - Securities to be held to maturity  137,606,000   144,633,000   -   144,633,000   - Federal Reserve Bank stock  1,411,000   1,411,000   -   1,411,000   - Federal Home Loan Bank stock  13,412,000   13,412,000   -   13,412,000   - Loans held for sale  184,000   184,000   -   184,000   - Loans (net of allowance for loan losses)                    Commercial                       Real estate  247,962,000   248,737,000   -   -   248,737,000    Construction  30,018,000   30,018,000   -   -   30,018,000    Other  83,021,000   83,529,000   -   -   83,529,000 Municipal  15,939,000   17,471,000   -   -   17,471,000 Residential                       Term  356,971,000   368,682,000   -   -   368,682,000    Construction  6,383,000   6,385,000   -   -   6,385,000 Home equity line of credit  102,587,000   102,581,000   -   -   102,581,000 Consumer  15,057,000   16,049,000   -   -   16,049,000 Total loans  857,938,000   873,452,000   -   -   873,452,000 Mortgage servicing rights  801,000   994,000   -   994,000   - Accrued interest receivable  5,690,000   5,690,000   -   5,690,000   - Financial liabilities                    Demand deposits $69,520,000  $67,807,000  $-  $67,807,000  $- NOW deposits  120,844,000   111,703,000   -   111,703,000   - Money market deposits  75,752,000   64,795,000   -   64,795,000   - Savings deposits  118,946,000   107,036,000   -   107,036,000   - Local certificates of deposit  215,013,000   220,572,000   -   220,572,000   - National certificates of deposit  415,760,000   420,850,000   -   420,850,000   - Total deposits  1,015,835,000   992,763,000   -   992,763,000   - Repurchase agreements  89,990,000   89,990,000   -   89,990,000   - Federal Home Loan Bank advances  150,161,000   157,589,000   -   157,589,000   - Total borrowed funds  240,151,000   247,579,000   -   247,579,000   - Accrued interest payable  644,000   644,000   -   644,000   - The estimated fair values for financial instruments as of December 31, 2011 and March 31, 2011 were as follows:   December 31, 2011  March 31, 2011    Carrying  Estimated  Carrying  Estimated    amount  fair value  amount  fair value Financial assets            Cash and cash equivalents $14,115,000  $14,115,000  $13,700,000  $13,700,000 Interest-bearing deposits in other banks  -   -   100,000   100,000 Securities available for sale  286,202,000   286,202,000   325,451,000   325,451,000 Securities to be held to maturity  122,661,000   130,677,000   109,936,000   114,051,000 Federal Home Loan Bank and Federal Reserve Bank stock  15,443,000   15,443,000   15,443,000   15,443,000 Loans held for sale  -   -   450,000   450,000 Loans (net of allowance for loan losses)  851,988,000   866,442,000   880,684,000   885,204,000 Mortgage servicing rights  1,201,000   1,581,000   1,490,000   2,205,000 Accrued interest receivable  4,835,000   4,835,000   6,236,000   6,236,000 Financial liabilities                Deposits $941,333,000  $921,388,000  $1,050,257,000  $998,261,000 Borrowed funds  265,663,000   273,568,000   217,534,000   222,498,000 Accrued interest payable  734,000   734,000   814,000   814,000  |

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| - Definition
Tabular disclosure of assets and liabilities by class, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, that are measured at fair value on a nonrecurring basis in periods after initial recognition (for example, impaired assets). The disclosures that may be required or desired include: (a) the fair value measurements recorded during the period and the reasons for the measurements and (b) the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets or liabilities (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3).  Where the quoted price in an active market for the identical liability is not available, the Level 1 input is the quoted price of an identical liability when traded as an asset.
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| - Definition
Tabular disclosure of the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments, assets, and liabilities. Such certain disclosures about the financial instruments, assets, and liabilities include: (1) the fair value of the required items together with their carrying amounts (as appropriate) and (2) the methodology and assumptions used in developing such estimates of fair value.
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| - Definition
Tabular disclosure of assets and liabilities, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3).
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