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Segment and Geographic Information (Details 1) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Information about geographic areas
Product revenue	$ 297,310	$ 263,463	$ 158,379
Service revenue	24,604	27,228	17,348
Long-lived assets	135,710	136,489	149,239
United States [Member]
Information about geographic areas
Product revenue	98,833	83,128	53,803
Service revenue	10,965	12,702	6,657
Long-lived assets	121,178	122,765	127,317
Europe [Member]
Information about geographic areas
Product revenue	100,984	83,432	54,559
Service revenue	6,343	7,611	5,261
Long-lived assets	10,811	10,387	19,617
Japan [Member]
Information about geographic areas
Product revenue	45,295	55,269	30,674
Service revenue	4,147	3,986	3,513
Long-lived assets	2,773	2,457	2,037
Other [Member]
Information about geographic areas
Product revenue	52,198	41,634	19,343
Service revenue	3,149	2,929	1,917
Long-lived assets	$ 948	$ 880	$ 268

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- Definition

Long-lived assets other than financial instruments, long-term customer relationships of a financial institution, mortgage and other servicing rights, deferred policy acquisition costs, and deferred tax assets.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 131

-Paragraph 38

-Subparagraph b(1)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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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 SEC

-Name Regulation S-X (SX)

-Number 210

-Article 5

-Section 03

-Paragraph 1



Reference 2: 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=6880815&loc=d3e20235-122688

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- Definition

Aggregate revenue during the period from services rendered in the normal course of business, after deducting allowances and discounts.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Article 5

-Section 03

-Paragraph 1



Reference 2: 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(d))

-URI http://asc.fasb.org/extlink&oid=6880815&loc=d3e20235-122688

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