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Development and License Agreements - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Licenses Agreements [Line Items]
Royalty payments on products	$ 0.7	$ 0.8
Payments made relating to the manufacturing of the products	4.6	3.9
Prior written notice for termination of agreement	24 months
Revenue from sale of components	2.7
Fresenius
Licenses Agreements [Line Items]
Prior written notice for termination of agreement	30 months
Royalty
Licenses Agreements [Line Items]
Royalties owed	0.6	0.7
Royalty | Platelet system
Licenses Agreements [Line Items]
Royalty rate applied towards sale of products	10.00%
Royalty | Plasma system
Licenses Agreements [Line Items]
Royalty rate applied towards sale of products	3.00%
Manufacturing Costs
Licenses Agreements [Line Items]
Royalties owed	$ 3.4	$ 4.3

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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.

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-SubTopic 210

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Revenues from the sale of other goods or rendering of other services, not elsewhere specified in the taxonomy; net of (reduced by) sales adjustments, returns, allowances, and discounts.

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