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Derivatives - Additional Information (Detail) - USD ($) |  | 6 Months Ended |  |
--- | --- | --- | --- | ---
Sep. 30, 2016 | Jun. 30, 2019 | Apr. 03, 2019 | Dec. 31, 2018
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |  |  |
Maximum period for hedging a portion of forecasted foreign currency denominated intercompany sales of inventory |  | 18 months |  |
Gross notional values of outstanding forward foreign exchange contracts |  | $ 161,278,000 |  | $ 159,394,000
Accumulated other comprehensive income realization period |  | 12 months |  |
Interest Rate Hedge [Member] |  |  |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |  |  |
Percentage of debt which is subject to interest rate swap fixed rate | 50.00% |  |  |
Interest rate swap agreement, credit spread rate |  | 2.00% |  |
Interest rate swap agreement, maturity date | Sep. 30, 2020 |  |  |
Interest rate swap agreement, notional amount |  | $ 290,000,000 |  | 290,000,000
Interest rate swap agreement, interest rate description |  | the Company entered into an interest rate swap agreement to fix the rate on approximately 50% of its then-outstanding balance under the Credit Agreement, as described further in Note 11. This hedge fixes the interest rate paid on the hedged debt at 1.198% per annum plus the applicable credit spread, which was 2.0% as of June 30, 2019, through September 30, 2020. |  |
Interest rate swap agreement, fair value |  | $ 2,055,000 |  | $ 6,083,000
Interest Rate Hedge [Member] | Newport [Member] | Term Loan Credit Agreement [Member] | Secured Debt Repricing Amendment 1 [Member] |  |  |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |  |  |
Interest rate swap agreement, interest rate | 1.198% |  | 2.309% |
Interest rate swap agreement, credit spread rate |  | 2.25% |  |
Interest rate swap agreement, notional amount | $ 335,000,000 | $ 300,000,000 | $ 300,000,000 |
Interest rate swap agreement, fair value |  | $ 6,688,000 |  |
Cash Flow Hedging [Member] | Interest Rate Hedge [Member] |  |  |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |  |  |
Interest rate swap agreement, interest rate | 1.198% |  |  |

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- Definition Aggregate notional amount specified by the derivative(s). Expressed as an absolute value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Article 12 -Section 13 -Sentence Column B + Details
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- Definition When the derivative or group of derivatives presented is a swap, the type of interest rate (fixed, variable, stepped, etc.) paid on the swap. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Article 12 -Section 13 -Sentence Column A -Footnote 1 + Details
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- Definition Accumulated other comprehensive income realization period. + References No definition available. + Details
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- Definition Percentage of debt subject to interest rate swap rate. + References No definition available. + Details
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- Definition Nominal or face amount used to calculate payments on the derivative asset. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1A -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5579245-113959 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1B -URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5580258-113959 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5579245-113959 + Details
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- Definition The percentage points added to the reference rate to compute the variable rate on the interest rate derivative. + References No definition available. + Details
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- Definition Fair value of the assets less the liabilities of a derivative or group of derivatives. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=118260190&loc=d3e13433-108611 + Details
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- Definition Fixed interest rate related to the interest rate derivative. + References No definition available. + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Date the derivative contract matures, in CCYY-MM-DD format. + References No definition available. + Details
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- Definition Maximum amount of time remaining before foreign currency exchange rate derivatives mature or expire, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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