Income Taxes - Reconciliation of Deferred Taxes Included in Other Assets (Detail) - USD ($) $ in Thousands |
Dec. 31, 2016 |
Dec. 31, 2015 |
Dec. 31, 2014 |
|---|---|---|---|
| Deferred tax assets: | |||
| Allowance for loan losses | $ 1,858 | $ 2,744 | $ 3,130 |
| Employee benefit plans' liabilities | 4,784 | 4,633 | 4,490 |
| Unrealized loss on available for sale securities, charged from equity | 1,013 | 210 | |
| Loss on credit impairment of securities | 576 | 576 | |
| Earned retiree health benefits plan liability | 1,638 | 1,638 | 1,638 |
| General business and AMT credits | 1,605 | 2,011 | 1,735 |
| Tax net operating loss carryforward | 3,423 | 2,514 | 651 |
| Other | 1,731 | 1,535 | 1,637 |
| Valuation allowance | (11,560) | (10,106) | (8,140) |
| Deferred tax assets | 5,068 | 5,545 | 5,351 |
| Deferred tax liabilities: | |||
| Unrealized gain on available for sale securities, charged to equity | 180 | ||
| Unearned retiree health benefits plan asset | 720 | 734 | 362 |
| Bank premises and equipment | 4,011 | 4,369 | 4,760 |
| Other | 337 | 262 | 229 |
| Deferred tax liabilities | 5,068 | 5,545 | 5,351 |
| Net deferred taxes | $ 0 | $ 0 | $ 0 |
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- Definition Deferred tax assets earned retiree health benefits plan liability. No definition available.
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- Definition Deferred tax liabilities unearned retiree health benefits plan liability. No definition available.
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- References No definition available.
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- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount, after allocation of valuation allowances and deferred tax liability, of deferred tax asset attributable to deductible differences and carryforwards, without jurisdictional netting. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible operating loss carryforwards. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount, before allocation of valuation allowance, of deferred tax asset attributable to deductible temporary differences, classified as other. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible general business tax credit carryforwards. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount, before allocation of valuation allowance, of deferred tax asset attributable to deductible temporary differences from employee benefits, classified as other. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from estimated impairment losses. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from the provision for loan losses. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from unrealized losses on available-for-sale securities. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount, after deferred tax asset, of deferred tax liability attributable to taxable differences without jurisdictional netting. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount of deferred tax liability attributable to taxable temporary differences classified as other. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount of deferred tax liability attributable to taxable temporary differences from property, plant, and equipment. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount of deferred tax liability attributable to taxable temporary differences from unrealized gains on trading securities. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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