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Segment, Customer and Geographic Information (Details Textual) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2012 | Jun. 30, 2011 | Jun. 30, 2012 | Jun. 30, 2011
Segment Customer and Geographic Information (Additional Textual) [Abstract] |  |  |  |
Government grants and cooperative agreements | $ 0 | $ 0 | $ 91 | $ 436
Government grants and cooperative agreements [Member] |  |  |  |
Segment, Customer and Geographic Information (Textual) [Abstract] |  |  |  |
Company's total product revenue from significant customers |  |  | 1.00% | 3.00%

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- Details
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- Definition Percentage of revenue generated from a single external customer that accounts for 10 percent or more of an entity's revenues. + References No definition available. + Details
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- Definition Revenue earned during the period from non-repayable sum of money awarded to an entity to carry out a specific purpose as provided in grant agreements. + 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(e)) -URI http://asc.fasb.org/extlink&oid=6880815&loc=d3e20235-122688 + Details
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