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Debt - Additional Information (Detail) | 12 Months Ended
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Dec. 31, 2017 USD ($)
Debt Instrument [Line Items] |
Maximum percentage of stock of non US subsidiaries pledge to secure obligation | 66.00%
Federal Funds Rate | Minimum |
Debt Instrument [Line Items] |
Interest rate | 0.50%
Federal Funds Rate | Maximum |
Debt Instrument [Line Items] |
Interest rate | 1.33%
London Interbank Offered Rate |
Debt Instrument [Line Items] |
Interest rate | 1.56%
Revolving Note (U.S. Dollar) |
Debt Instrument [Line Items] |
Undrawn borrowing capacity | $ 220,859,000
United State Bank Of America Credit Facility |
Debt Instrument [Line Items] |
Interest rate | 4.50%
Euro Currency Rate Loans | Minimum |
Debt Instrument [Line Items] |
Interest rate | 0.00%
Euro Currency Rate Loans | Minimum | Credit Agreement |
Debt Instrument [Line Items] |
Interest rate | 1.25%
Euro Currency Rate Loans | Maximum |
Debt Instrument [Line Items] |
Interest rate | 1.00%
Euro Currency Rate Loans | Maximum | Credit Agreement |
Debt Instrument [Line Items] |
Interest rate | 2.00%
Base Rate Loans | Minimum | Credit Agreement |
Debt Instrument [Line Items] |
Interest rate | 0.25%
Base Rate Loans | Maximum | Credit Agreement |
Debt Instrument [Line Items] |
Interest rate | 1.00%
DEG Loan |
Debt Instrument [Line Items] |
Semi-annual principal payments earliest date | 2015-03
Semi-annual principal payments latest date | 2019-09
DEG Vietnam Loan |
Debt Instrument [Line Items] |
Semi-annual principal payments earliest date | 2017-11
Semi-annual principal payments latest date | 2023-05
Revolving Credit Facility | Revolving Note (U.S. Dollar) |
Debt Instrument [Line Items] |
Maximum borrowing capacity | $ 350,000,000

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- Definition The effective interest rate during the reporting period. + 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 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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