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Reclassifications of Accumulated Other Comprehensive Loss (Detail) $ in Thousands | 9 Months Ended
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Sep. 30, 2016 USD ($) | [1]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |
Reclassifications, net of tax | $ (4,007) |
Past-service cost |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |
Reclassifications, before tax | 187 | [2]
Actuarial losses |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |
Reclassifications, before tax | (7,031) | [2]
Amortization of defined benefit pension |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |
Reclassifications, before tax | (6,844) |
Tax benefit | 2,837 |
Reclassifications, net of tax | $ (4,007) |
[1] | Amounts in parentheses indicate expense items.
[2] | Please see Note 9, "Pension and Other Post-Retirement Benefits," for additional information.

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- Definition Amount before tax of reclassification adjustments of 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=66004124&loc=SL7669686-108580 + Details
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