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Debt - Carrying Value of Debt (Detail) - USD ($) $ in Thousands | Dec. 31, 2016 | Dec. 31, 2015
--- | --- | ---
Debt Instrument [Line Items] |  |
Debt issuance costs | $ (9,372) | $ (14,424)
Total debt | 743,918 | 924,159
Less current portion of term credit facility | 95,293 | 95,293
Less current portion of debt issuance costs | (4,970) | (5,583)
Total long-term debt | 653,595 | 834,449
6.375% Senior Notes, due August 2020 [Member] |  |
Debt Instrument [Line Items] |  |
Total debt | 300,000 | 300,000
Term Credit Facility [Member] |  |
Debt Instrument [Line Items] |  |
Total debt | 365,290 | 460,583
Revolving Credit Facility |  |
Debt Instrument [Line Items] |  |
Total debt | $ 88,000 | $ 178,000

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- Definition Amount, after accumulated amortization, of debt issuance costs classified as current. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.8) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28555-108399 + Details
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