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Segment Information - Net Sales to Foreign Customers (Detail) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 12 Months Ended
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Dec. 31, 2013 | Sep. 30, 2013 | Jun. 30, 2013 | Mar. 31, 2013 | Dec. 31, 2012 | Sep. 30, 2012 | Jun. 30, 2012 | Mar. 31, 2012 | Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011
Sales Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Foreign net sales to unaffiliated customers | $ 149,035 | $ 177,350 | $ 202,223 | $ 150,679 | $ 177,137 | $ 182,374 | $ 209,275 | $ 190,245 | $ 679,287 | $ 759,031 | $ 805,256
Unaffiliated Customers [Member] |  |  |  |  |  |  |  |  |  |  |
Sales Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Foreign net sales to unaffiliated customers |  |  |  |  |  |  |  |  | 34,154 | 32,170 | 36,215
Canada [Member] | Unaffiliated Customers [Member] |  |  |  |  |  |  |  |  |  |  |
Sales Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Foreign net sales to unaffiliated customers |  |  |  |  |  |  |  |  | 19,976 | 21,079 | 23,765
Other [Member] | Unaffiliated Customers [Member] |  |  |  |  |  |  |  |  |  |  |
Sales Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Foreign net sales to unaffiliated customers |  |  |  |  |  |  |  |  | $ 14,178 | $ 11,091 | $ 12,450

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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 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 1 -Article 5 + Details
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