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Segment Reporting (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Segment Reporting Information [Line Items]
Product revenues	$ 193,938	$ 148,090
Total product revenues in percentage	100.00%	100.00%
United States
Segment Reporting Information [Line Items]
Product revenues	85,067	63,312
Total product revenues in percentage	44.00%	43.00%
Germany
Segment Reporting Information [Line Items]
Product revenues	22,476	19,985
Total product revenues in percentage	12.00%	13.00%
South Korea
Segment Reporting Information [Line Items]
Product revenues	21,915	11,488
Total product revenues in percentage	11.00%	8.00%
China
Segment Reporting Information [Line Items]
Product revenues	15,944	14,129
Total product revenues in percentage	8.00%	10.00%
Japan
Segment Reporting Information [Line Items]
Product revenues	10,465	9,007
Total product revenues in percentage	6.00%	6.00%
United Kingdom
Segment Reporting Information [Line Items]
Product revenues	6,600	4,131
Total product revenues in percentage	3.00%	3.00%
Czech Republic
Segment Reporting Information [Line Items]
Product revenues	6,086	3,658
Total product revenues in percentage	3.00%	2.00%
Mexico
Segment Reporting Information [Line Items]
Product revenues	4,703	3,441
Total product revenues in percentage	2.00%	2.00%
Canada
Segment Reporting Information [Line Items]
Product revenues	3,162	3,518
Total product revenues in percentage	2.00%	2.00%
Other
Segment Reporting Information [Line Items]
Product revenues	17,520	15,421
Total product revenues in percentage	9.00%	11.00%
Total Foreign
Segment Reporting Information [Line Items]
Product revenues	$ 108,871	$ 84,778
Total product revenues in percentage	56.00%	57.00%

X

- Definition

Sales revenues goods net percentage.

+ References

No definition available.

+ Details

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X

- 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

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