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Quarterly Results of Operations (Unaudited) - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified | 3 Months Ended
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Mar. 31, 2013 | Dec. 31, 2012 | Sep. 30, 2012 | Jun. 30, 2012 | Mar. 31, 2012
Quarterly Financial Information Disclosure [Abstract] |  |  |  |  |
Foreign exchange gains or losses on intercompany loans after tax | $ 350 | $ 826 | $ 659 | $ 1,109 | $ 734
Restructuring and non-operating charges | 399 |  |  |  |
Elimination of Valuation allowances of deferred assets after tax |  | 7,257 |  |  |
Impairment charges |  | $ 967 |  |  |

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- Definition Elimination of deferred tax valuation allowance. + References No definition available. + Details
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- Definition Foreign currency transaction gain loss unrealized after tax. + References No definition available. + Details
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- Definition Restructuring and non operating expenses net of tax. + References No definition available. + Details
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- Definition The charge against earnings resulting from the aggregate write down of tangible assets from their carrying value to their fair value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6360339&loc=d3e1361-107760 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6391110&loc=d3e2921-110230 + Details
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