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Accumulated Other Comprehensive Income (Loss) (Tables) | 9 Months Ended
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Sep. 30, 2013
Equity [Abstract] |
Schedule of Changes in Component of Accumulated Other Comprehensive Income (Loss) | Changes in each component of accumulated other comprehensive income (loss) were as follows:
|  | Net Unrealized Gains (Losses) on Securities |  |  | Adjustments Related to Pension Benefits |  |  | Accumulated Other Comprehensive Income (Loss) |
Balance at December 31, 2011 |  | $ | 3,166 |  |  | $ | (2,175 | ) |  | $ | 991 |
Net unrealized gains on investment securities |  |  | 122 |  |  |  | — |  |  |  | 122 |
Reclassification adjustment |  |  | (1,285 | ) |  |  | — |  |  |  | (1,285 | )
Balance at September 30, 2012 |  | $ | 2,003 |  |  | $ | (2,175 | ) |  | $ | (172 | )
Balance at December 31, 2012 |  | $ | 1,770 |  |  | $ | (2,629 | ) |  | $ | (859 | )
Net unrealized losses on investment securities |  |  | (3,194 | ) |  |  | — |  |  |  | (3,194 | )
Balance at September 30, 2013 |  | $ | (1,424 | ) |  | $ | (2,629 | ) |  | $ | (4,053 | )

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- Definition Tabular disclosure of the components of accumulated other comprehensive income (loss). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=28358780&loc=SL7669686-108580 + Details
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