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Segment Reporting (Detail) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011
Segment Reporting Information [Line Items] |  |  |
Product revenues | $ 662,082 | $ 554,979 | $ 369,588
Total product revenues in percentage | 100.00% | 100.00% | 100.00%
United States |  |  |
Segment Reporting Information [Line Items] |  |  |
Product revenues | 292,079 | 233,737 | 134,010
Total product revenues in percentage | 44.00% | 42.00% | 36.00%
Germany |  |  |
Segment Reporting Information [Line Items] |  |  |
Product revenues | 84,035 | 67,132 | 40,833
Total product revenues in percentage | 13.00% | 12.00% | 11.00%
China |  |  |
Segment Reporting Information [Line Items] |  |  |
Product revenues | 70,671 | 55,674 | 31,193
Total product revenues in percentage | 11.00% | 10.00% | 9.00%
Korea |  |  |
Segment Reporting Information [Line Items] |  |  |
Product revenues | 58,329 | 42,878 | 37,913
Total product revenues in percentage | 9.00% | 8.00% | 10.00%
Japan |  |  |
Segment Reporting Information [Line Items] |  |  |
Product revenues | 39,844 | 35,279 | 25,295
Total product revenues in percentage | 6.00% | 6.00% | 7.00%
United Kingdom |  |  |
Segment Reporting Information [Line Items] |  |  |
Product revenues | 18,864 | 13,194 | 10,686
Total product revenues in percentage | 3.00% | 2.00% | 3.00%
Czech Republic |  |  |
Segment Reporting Information [Line Items] |  |  |
Product revenues | 17,247 | 15,361 | 11,722
Total product revenues in percentage | 3.00% | 3.00% | 3.00%
Mexico |  |  |
Segment Reporting Information [Line Items] |  |  |
Product revenues | 15,670 | 14,988 | 21,529
Total product revenues in percentage | 2.00% | 3.00% | 6.00%
Canada |  |  |
Segment Reporting Information [Line Items] |  |  |
Product revenues | 14,254 | 17,582 | 12,305
Total product revenues in percentage | 2.00% | 3.00% | 3.00%
Other |  |  |
Segment Reporting Information [Line Items] |  |  |
Product revenues | 51,089 | 59,154 | 44,102
Total product revenues in percentage | 7.00% | 11.00% | 12.00%
Foreign |  |  |
Segment Reporting Information [Line Items] |  |  |
Product revenues | $ 370,003 | $ 321,242 | $ 235,578
Total product revenues in percentage | 56.00% | 58.00% | 64.00%

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- Definition Aggregate revenue during the period from the sale of goods in the normal course of business, after deducting returns, allowances and 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(a)) -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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