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Development and License Agreements - Additional Information (Detail) (USD $) | 3 Months Ended | 12 Months Ended
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Dec. 31, 2012 | Sep. 30, 2012 | Jun. 30, 2012 | Mar. 31, 2012 | Dec. 31, 2011 | Sep. 30, 2011 | Jun. 30, 2011 | Mar. 31, 2011 | Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010
Licenses Agreements [Line Items] |  |  |  |  |  |  |  |  |  |  |
Royalty payments on products |  |  |  |  |  |  |  |  | $ 2,700,000 | $ 2,200,000 | $ 2,000,000
Payments made relating to the manufacturing of the products |  |  |  |  |  |  |  |  | 12,200,000 | 9,600,000 | 8,600,000
Product warranty receivable current | 1,800,000 |  |  |  |  |  |  |  | 1,800,000 |  |
Revenue from cooperative agreement | 0 | 0 | 0 | 91,000 | 527,000 | 1,479,000 | 0 | 436,000 | 91,000 | 2,442,000 | 1,432,000
Royalty |  |  |  |  |  |  |  |  |  |  |
Licenses Agreements [Line Items] |  |  |  |  |  |  |  |  |  |  |
Royalties owed | 800,000 |  |  |  | 700,000 |  |  |  | 800,000 | 700,000 |
Manufacturing Costs |  |  |  |  |  |  |  |  |  |  |
Licenses Agreements [Line Items] |  |  |  |  |  |  |  |  |  |  |
Royalties owed | $ 6,200,000 |  |  |  | $ 3,400,000 |  |  |  | $ 6,200,000 | $ 3,400,000 |
Platelet system | Royalty |  |  |  |  |  |  |  |  |  |  |
Licenses Agreements [Line Items] |  |  |  |  |  |  |  |  |  |  |
Royalty rate applied towards sale of products |  |  |  |  |  |  |  |  | 10.00% |  |
Plasma system | Royalty |  |  |  |  |  |  |  |  |  |  |
Licenses Agreements [Line Items] |  |  |  |  |  |  |  |  |  |  |
Royalty rate applied towards sale of products |  |  |  |  |  |  |  |  | 3.00% |  |
Red blood cell system | Royalty |  |  |  |  |  |  |  |  |  |  |
Licenses Agreements [Line Items] |  |  |  |  |  |  |  |  |  |  |
Royalty rate applied towards sale of products |  |  |  |  |  |  |  |  | 5.00% |  |
Illuminators | Royalty |  |  |  |  |  |  |  |  |  |  |
Licenses Agreements [Line Items] |  |  |  |  |  |  |  |  |  |  |
Royalty rate applied towards sale of products |  |  |  |  |  |  |  |  | 6.50% |  |

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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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