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Long-Term Debt - Redemption Price Percentage (Detail) - Senior Notes - 6% senior notes due 2022 | 12 Months Ended
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Dec. 31, 2017
2018 |
Long Term Debt And Capital Lease Obligations [Line Items] |
Redemption price (as a percent) | 102.00%
2019 |
Long Term Debt And Capital Lease Obligations [Line Items] |
Redemption price (as a percent) | 101.00%
2020 and thereafter |
Long Term Debt And Capital Lease Obligations [Line Items] |
Redemption price (as a percent) | 100.00%

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- Definition Long-Term Debt And Capital Lease Obligations [Line Items] + References No definition available. + Details
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- Definition Percentage price of original principal amount of debt at which debt can be redeemed by the issuer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 470 -Section 50 -Paragraph 3 -Subparagraph e -URI http://asc.fasb.org/extlink&oid=75038535&loc=d3e64711-112823 + Details
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