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Other Comprehensive Income (Tables) | 12 Months Ended
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Dec. 31, 2013
Equity [Abstract] |
Components of Other Comprehensive Income and Related Tax Effects | Other comprehensive income components and related tax effects were as follows for the years ended December 31, 2013, 2012, and 2011:
|  | 2013 |  |  | 2012 |  |  | 2011 |
Unrealized holding gains (losses) on available for sale securities |  | $ | (36,130 | ) |  | $ | 6,597 |  |  | $ | 22,457 |
Less reclassification adjustment for gains recognized in earnings |  |  | (355 | ) |  |  | (1,379 | ) |  |  | (614 | )
Net unrealized gains |  |  | (36,485 | ) |  |  | 5,218 |  |  |  | 21,843 |
Tax effect |  |  | 12,770 |  |  |  | (1,826 | ) |  |  | (7,642 | )
Net-of-tax amount |  |  | (23,715 | ) |  |  | 3,392 |  |  |  | 14,201 |
Unrealized holding gains (losses) on available for sale securities for which a portion of an other-than-temporary impairment has been recognized in earnings |  |  | 61 |  |  |  | 260 |  |  |  | (28 | )
Less reclassification adjustment for impairment loss recognized in earnings |  |  | 0 |  |  |  | 0 |  |  |  | 398 |
Net unrealized gains |  |  | 61 |  |  |  | 260 |  |  |  | 370 |
Tax effect |  |  | (21 | ) |  |  | (91 | ) |  |  | (130 | )
Net-of-tax amount |  |  | 40 |  |  |  | 169 |  |  |  | 240 |
Actuarial loss on postemployment health care plan |  |  | (219 | ) |  |  | (578 | ) |  |  | (757 | )
Net amortization of transition obligation and actuarial gain |  |  | 61 |  |  |  | 41 |  |  |  | 11 |
Net unrealized loss on postemployment health care plan |  |  | (158 | ) |  |  | (537 | ) |  |  | (746 | )
Tax effect |  |  | 55 |  |  |  | 188 |  |  |  | 261 |
Net-of-tax amount |  |  | (103 | ) |  |  | (349 | ) |  |  | (485 | )
Unrealized loss on interest rate swap |  |  | 229 |  |  |  | (465 | ) |  |  | (1,205 | )
Less reclassification adjustment for losses recognized in earnings |  |  | 400 |  |  |  | 390 |  |  |  | 402 |
Net unrealized gain (loss) |  |  | 629 |  |  |  | (75 | ) |  |  | (803 | )
Tax effect |  |  | (220 | ) |  |  | 26 |  |  |  | 281 |
Net-of-tax amount |  |  | 409 |  |  |  | (49 | ) |  |  | (522 | )
Other comprehensive income |  | $ | (23,369 | ) |  | $ | 3,163 |  |  | $ | 13,434 |
Summary of Change in Accumulated Other Comprehensive Income (Loss) | The following is a summary of the change in the accumulated other comprehensive income (loss) balance, net of tax, for the years ended December 31, 2013, 2012, and 2011:
|  | Balance 1/1/11 |  |  | Increase (Decrease) |  |  | Balance 12/31/11 |  |  | Increase (Decrease) |  |  | Balance 12/31/12 |  |  | Increase (Decrease) |  |  | Balance 12/31/13 |
Unrealized gains (losses) on securities available for sale |  | $ | (1,963 | ) |  | $ | 14,441 |  |  | $ | 12,478 |  |  | $ | 3,561 |  |  | $ | 16,039 |  |  | $ | (23,675 | ) |  | $ | (7,636 | )
Unrealized gain (loss) on postretirement benefits plan |  |  | (147 | ) |  |  | (485 | ) |  |  | (632 | ) |  |  | (349 | ) |  |  | (981 | ) |  |  | (103 | ) |  |  | (1,084 | )
Unrealized loss on interest rate swap |  |  | (563 | ) |  |  | (522 | ) |  |  | (1,085 | ) |  |  | (49 | ) |  |  | (1,134 | ) |  |  | 409 |  |  |  | (725 | )
Total |  | $ | (2,673 | ) |  | $ | 13,434 |  |  | $ | 10,761 |  |  | $ | 3,163 |  |  | $ | 13,924 |  |  | $ | (23,369 | ) |  | $ | (9,445 | )

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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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- Definition Tabular disclosure of components of comprehensive income (loss). Includes, but is not limited to, foreign currency translation adjustments, foreign currency transactions designated as economic hedges of a net investment in foreign entity, gain (loss) and prior service cost (credit) for pension plans and other postretirement benefit plans. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=28358780&loc=d3e526-108580 + Details
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