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Payment for manufacturing of entity products.

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-Section S99

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Carrying value as of the balance sheet date of obligations incurred through that date and payable for royalties.

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-Publisher SEC

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-Publisher SEC

-Name Regulation S-X (SX)

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The amount of cash paid for royalties during the current period.

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-Name Accounting Standards Codification

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Development and License Agreements - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Licenses Agreements [Line Items]
Royalty payments on products	$ 2.5us-gaap_PaymentsForRoyalties	$ 3.0us-gaap_PaymentsForRoyalties	$ 2.7us-gaap_PaymentsForRoyalties
Prior written notice for termination of agreement	24 months
Payments made relating to the manufacturing of the products	19.1	15.0	12.2
Amounts due from Fresenius	1.3us-gaap_AccountsAndNotesReceivableNet	0us-gaap_AccountsAndNotesReceivableNet
Fresenius
Licenses Agreements [Line Items]
Prior written notice for termination of agreement	30 months
Royalty
Licenses Agreements [Line Items]
Royalties owed	0.7	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	$ 5.1	$ 4.3