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Business Combinations (Schedule of Operating Results) (Details) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 12 Months Ended
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Dec. 31, 2013 | Sep. 30, 2013 | Jun. 30, 2013 | Mar. 31, 2013 | Dec. 31, 2012 | Sep. 30, 2012 | Jun. 30, 2012 | Mar. 31, 2012 | Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net interest income | $ 11,866 | $ 11,722 | $ 11,228 | $ 11,370 | $ 11,422 | $ 11,183 | $ 10,546 | $ 10,345 | $ 46,186 | $ 43,496 | $ 39,750
Non-interest income |  |  |  |  |  |  |  |  | 6,851 | 7,210 | 7,478
Net income | 4,984 | 5,094 | 4,923 | 4,924 | 4,469 | 4,454 | 4,353 | 4,231 | 19,925 | 17,507 | 13,926
Saddle River Valley Bank [Member] |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net interest income |  |  |  |  |  |  |  |  |  | 1,352 |
Non-interest income |  |  |  |  |  |  |  |  |  | 15 |
Non-interest expense and income taxes |  |  |  |  |  |  |  |  |  | (763) |
Net income |  |  |  |  |  |  |  |  |  | $ 604 |

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