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Other Comprehensive Income (Tables) | 12 Months Ended
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Dec. 31, 2015
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, 2015, 2014, and 2013:
|  | 2015 |  |  | 2014 |  |  | 2013 |
Unrealized holding (losses) gains on available for sale securities |  | $ | (623 | ) |  | $ | 16,141 |  |  | $ | (36,130 | )
Less reclassification adjustment for gains recognized in earnings |  |  | (666 | ) |  |  | (429 | ) |  |  | (355 | )
Net unrealized (losses) gains |  |  | (1,289 | ) |  |  | 15,712 |  |  |  | (36,485 | )
Tax effect |  |  | 452 |  |  |  | (5,498 | ) |  |  | 12,770 |
Net-of-tax amount |  |  | (837 | ) |  |  | 10,214 |  |  |  | (23,715 | )
Unrealized holding gains on available for sale securities for which a portion of an other-than-temporary impairment has been recognized in earnings |  |  | 2,508 |  |  |  | 244 |  |  |  | 61 |
Less reclassification adjustment for impairment loss recognized in earnings |  |  | 0 |  |  |  | 0 |  |  |  | 0 |
Net unrealized gains |  |  | 2,508 |  |  |  | 244 |  |  |  | 61 |
Tax effect |  |  | (878 | ) |  |  | (86 | ) |  |  | (21 | )
Net-of-tax amount |  |  | 1,630 |  |  |  | 158 |  |  |  | 40 |
Actuarial loss on postemployment health care plan |  |  | (311 | ) |  |  | (117 | ) |  |  | (219 | )
Net amortization of transition obligation and actuarial gain |  |  | 173 |  |  |  | 149 |  |  |  | 61 |
Net unrealized loss on postemployment health care plan |  |  | (138 | ) |  |  | 32 |  |  |  | (158 | )
Tax effect |  |  | 48 |  |  |  | (11 | ) |  |  | 55 |
Net-of-tax amount |  |  | (90 | ) |  |  | 21 |  |  |  | (103 | )
Unrealized gain (loss) on interest rate swap |  |  | (168 | ) |  |  | (213 | ) |  |  | 229 |
Less reclassification adjustment for losses recognized in earnings |  |  | 378 |  |  |  | 384 |  |  |  | 400 |
Net unrealized gain (loss) |  |  | 210 |  |  |  | 171 |  |  |  | 629 |
Tax effect |  |  | (73 | ) |  |  | (60 | ) |  |  | (220 | )
Net-of-tax amount |  |  | 137 |  |  |  | 111 |  |  |  | 409 |
Other comprehensive income (loss) |  | $ | 840 |  |  | $ | 10,504 |  |  | $ | (23,369 | )
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, 2015, 2014, and 2013:
|  |  | Balance |  |  |  | Increase |  |  |  | Balance |  |  |  | Increase |  |  |  | Balance |  |  |  | Increase |  |  |  | Balance |
|  |  | 1/1/13 |  |  |  | (Decrease) |  |  |  | 12/31/13 |  |  |  | (Decrease) |  |  |  | 12/31/14 |  |  |  | (Decrease) |  |  |  | 12/31/15 |
Unrealized gains (losses) on securities available for sale |  | $ | 16,039 |  |  | $ | (23,675 | ) |  | $ | (7,636 | ) |  | $ | 10,372 |  |  | $ | 2,736 |  |  | $ | 793 |  |  | $ | 3,529 |
Unrealized gain (loss) on postretirement benefits plan |  |  | (981 | ) |  |  | (103 | ) |  |  | (1,084 | ) |  |  | 21 |  |  |  | (1,063 | ) |  |  | (90 | ) |  |  | (1,153 | )
Unrealized loss on interest rate swap |  |  | (1,134 | ) |  |  | 409 |  |  |  | (725 | ) |  |  | 111 |  |  |  | (614 | ) |  |  | 137 |  |  |  | (477 | )
Total |  | $ | 13,924 |  |  | $ | (23,369 | ) |  | $ | (9,445 | ) |  | $ | 10,504 |  |  | $ | 1,059 |  |  | $ | 840 |  |  | $ | 1,899 |

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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=36458714&loc=d3e526-108580 + Details
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