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Items to be Recognized in 2017 as Component of Net Periodic Cost (Detail) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2016 | Dec. 31, 2015
Foreign Pension Plan [Member] |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Accumulated benefit obligations in excess of plan assets, projected benefit obligation | $ 71,000 | $ 60,100
Pension Benefits [Member] |  |
Items to be recognized in 2017 as a component of net periodic cost |  |
Net actuarial loss (gain) | 7,127 |
Prior service cost (credit) | 297 |
Net periodic cost (credit) to be recorded in 2017 | 7,424 |
Other Postretirement Benefits [Member] |  |
Items to be recognized in 2017 as a component of net periodic cost |  |
Net actuarial loss (gain) | (556) |
Prior service cost (credit) | (3,418) |
Net periodic cost (credit) to be recorded in 2017 | $ (3,974) |

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- Definition Amount included in accumulated other comprehensive income (AOCI) expected to be recognized as components of net periodic benefit cost for the fiscal year that follows the most recent annual statement of financial position, including gain (loss), prior service cost (credit), and transition asset (obligation). + References No definition available. + Details
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- Definition If aggregate disclosures are presented, the aggregate projected benefit obligation for pension plans with accumulated benefit obligations in excess of plan assets as of the measurement date of each statement of financial position presented. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=65897934&loc=d3e2417-114920 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 55 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=73719040&loc=d3e4179-114921 + Details
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