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Segment Information - Net Sales to Foreign Customers (Detail) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2015 | Sep. 30, 2015 | Jun. 30, 2015 | Mar. 31, 2015 | Dec. 31, 2014 | Sep. 30, 2014 | Jun. 30, 2014 | Mar. 31, 2014 | Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Foreign net sales to unaffiliated customers | $ 157,021 | $ 163,617 | $ 192,345 | $ 198,798 | $ 187,258 | $ 177,860 | $ 210,746 | $ 185,382 | $ 711,781 | $ 761,246 | $ 701,241
Unaffiliated Customers [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Foreign net sales to unaffiliated customers |  |  |  |  |  |  |  |  | 28,284 | 31,976 | 34,154
Unaffiliated Customers [Member] | Canada [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Foreign net sales to unaffiliated customers |  |  |  |  |  |  |  |  | 17,856 | 19,334 | 19,976
Unaffiliated Customers [Member] | Other [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Foreign net sales to unaffiliated customers |  |  |  |  |  |  |  |  | $ 10,428 | $ 12,642 | $ 14,178

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- Definition Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 + 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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