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Stock-based Compensation Plans - Summary of Change in Benefit Obligations Recognized in Comprehensive Income on Pre-tax Basis and Amounts Recognized in Consolidated Balance Sheets (Detail) - Other Post Retirement Benefits $ in Thousands | Dec. 31, 2017 USD ($)
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Defined Benefit Plan Disclosure [Line Items] |
Accumulated benefit obligation | $ 1,769
Change in benefit obligations (recognized in comprehensive income – pretax) |
Prior service cost | 1,769
Total other comprehensive income (loss) at December 31, 2017 | 1,769
Amounts recognized in the consolidated balance sheets: |
Noncurrent liability-accrued benefit cost | $ 1,769

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- Definition Amount of actuarial present value of benefits attributed to employee service rendered, excluding assumptions about future compensation level. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
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