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Other Comprehensive Income | 12 Months Ended
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Dec. 31, 2017
Equity [Abstract] |
Other Comprehensive Income | 22. Other Comprehensive Income Other comprehensive income components and related tax effects were as follows for the years ended December 31, 2017, 2016, and 2015:
|  | 2017 |  |  | 2016 |  |  | 2015 |
Unrealized holding losses on available for sale securities |  | $ | (136 | ) |  | $ | (1,838 | ) |  | $ | (623 | )
Less reclassification adjustment for gains recognized in earnings |  |  | (160 | ) |  |  | (83 | ) |  |  | (666 | )
Net unrealized losses |  |  | (296 | ) |  |  | (1,921 | ) |  |  | (1,289 | )
Tax effect |  |  | 104 |  |  |  | 672 |  |  |  | 452 |
Net-of-tax amount |  |  | (192 | ) |  |  | (1,249 | ) |  |  | (837 | )
Unrealized holding gains on available for sale securities for which a portion of an other-than-temporary impairment has been recognized in earnings |  |  | 134 |  |  |  | (442 | ) |  |  | 2,508 |
Less reclassification adjustment for gains recognized in earnings |  |  | (1,383 | ) |  |  | (922 | ) |  |  | 0 |
Net unrealized gains |  |  | (1,249 | ) |  |  | (1,364 | ) |  |  | 2,508 |
Tax effect |  |  | 437 |  |  |  | 477 |  |  |  | (878 | )
Net-of-tax amount |  |  | (812 | ) |  |  | (887 | ) |  |  | 1,630 |
Actuarial gain (loss) on postemployment health care plan |  |  | 808 |  |  |  | (282 | ) |  |  | (311 | )
Net amortization of transition obligation and actuarial gain |  |  | 192 |  |  |  | 184 |  |  |  | 173 |
Net unrealized gain (loss) on postemployment health care plan |  |  | 1,000 |  |  |  | (98 | ) |  |  | (138 | )
Tax effect |  |  | (175 | ) |  |  | 34 |  |  |  | 48 |
Net-of-tax amount |  |  | 825 |  |  |  | (64 | ) |  |  | (90 | )
Unrealized gain (loss) on interest rate swap |  |  | 10 |  |  |  | (63 | ) |  |  | (168 | )
Less reclassification adjustment for losses recognized in earnings |  |  | 288 |  |  |  | 340 |  |  |  | 378 |
Net unrealized gain |  |  | 298 |  |  |  | 277 |  |  |  | 210 |
Tax effect |  |  | (104 | ) |  |  | (97 | ) |  |  | (73 | )
Net-of-tax amount |  |  | 194 |  |  |  | 180 |  |  |  | 137 |
Other comprehensive income (loss) |  | $ | 15 |  |  | $ | (2,020 | ) |  | $ | 840 |
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, 2017, 2016, and 2015.
|  |  | Balance |  |  |  | Comprehensive |  |  |  | Reclassification of Disproportionate |  |  |  | Balance |
|  |  | 12/31/16 |  |  |  | Income (Loss) |  |  |  | Tax Effect |  |  |  | 12/31/17 |
Unrealized gains (losses) on securities available for sale |  | $ | 1,393 |  |  | $ | (1,004 | ) |  | $ | 84 |  |  | $ | 473 |
Unrealized gain (loss) on postretirement benefits plan |  |  | (1,217 | ) |  |  | 825 |  |  |  | (298 | ) |  |  | (690 | )
Unrealized loss on interest rate swap |  |  | (297 | ) |  |  | 194 |  |  |  | (23 | ) |  |  | (126 | )
Total |  | $ | (121 | ) |  | $ | 15 |  |  | $ | (237 | ) |  | $ | (343 | )
|  |  | Balance |  |  |  | Comprehensive |  |  |  | Reclassification of Disproportionate |  |  |  | Balance |
|  |  | 12/31/15 |  |  |  | Income (Loss) |  |  |  | Tax Effect |  |  |  | 12/31/16 |
Unrealized gains (losses) on securities available for sale |  | $ | 3,529 |  |  | $ | (2,136 | ) |  | $ | 0 |  |  | $ | 1,393 |
Unrealized gain (loss) on postretirement benefits plan |  |  | (1,153 | ) |  |  | (64 | ) |  |  | 0 |  |  |  | (1,217 | )
Unrealized loss on interest rate swap |  |  | (477 | ) |  |  | 180 |  |  |  | 0 |  |  |  | (297 | )
Total |  | $ | 1,899 |  |  | $ | (2,020 | ) |  | $ | 0 |  |  | $ | (121 | )
|  |  | Balance |  |  |  | Comprehensive |  |  |  | Reclassification of Disproportionate |  |  |  | Balance |
|  |  | 1/1/15 |  |  |  | Income (Loss) |  |  |  | Tax Effect |  |  |  | 12/31/15 |
Unrealized gains (losses) on securities available for sale |  | $ | 2,736 |  |  | $ | 793 |  |  | $ | 0 |  |  | $ | 3,529 |
Unrealized gain (loss) on postretirement benefits plan |  |  | (1,063 | ) |  |  | (90 | ) |  |  | 0 |  |  |  | (1,153 | )
Unrealized loss on interest rate swap |  |  | (614 | ) |  |  | 137 |  |  |  | 0 |  |  |  | (477 | )
Total |  | $ | 1,059 |  |  | $ | 840 |  |  | $ | 0 |  |  | $ | 1,899 |

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- Definition The entire disclosure for comprehensive income, which includes, but is not limited to, 1) the amount of income tax expense or benefit allocated to each component of other comprehensive income, including reclassification adjustments, 2) the reclassification adjustments for each classification of other comprehensive income and 3) the ending accumulated balances for each component of comprehensive income. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -URI http://asc.fasb.org/topic&trid=2134417 + Details
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Data Type: | nonnum:textBlockItemType
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- References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration