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License Agreements (Details) (USD $) In Millions, unless otherwise specified | 3 Months Ended | 9 Months Ended |  |  |  |  | 9 Months Ended
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Sep. 30, 2012 | Sep. 30, 2011 | Sep. 30, 2012 | Sep. 30, 2011 | Sep. 30, 2012 Royalty [Member] | Dec. 31, 2011 Royalty [Member] | Sep. 30, 2012 Manufacturing Costs [Member] | Dec. 31, 2011 Manufacturing Costs [Member] | Sep. 30, 2012 Platelet system [Member] Royalty [Member] | Sep. 30, 2012 Plasma system [Member] Royalty [Member] | Sep. 30, 2012 Red blood cell system [Member] Royalty [Member] | Sep. 30, 2012 Illuminators [Member] Royalty [Member]
License Agreement (Textual) [Abstract] |  |  |  |  |  |  |  |  |  |  |  |
Royalty rate applied towards sale of products |  |  |  |  |  |  |  |  | 10.00% | 3.00% | 5.00% | 6.50%
Royalties owed |  |  |  |  | $ 0.7 | $ 0.7 | $ 5.1 | $ 3.4 |  |  |  |
License Agreement (Additional Textual) [Abstract] |  |  |  |  |  |  |  |  |  |  |  |
Royalty payments on products | 0.7 | 0.6 | 2.1 | 1.6 |  |  |  |  |  |  |  |
Payments made relating to the manufacturing of the products | 1.4 | 2.1 | 8.9 | 8.5 |  |  |  |  |  |  |  |
Product warranty receivable current | $ 1.7 |  | $ 1.7 |  |  |  |  |  |  |  |  |

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- Definition Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 15 -Subparagraph 5 -Article 9 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.15(5)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.15(a)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 15 -Subparagraph a -Article 7 + Details
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