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Significant Customers that Accounted for More than Ten Percentage of Total Product Revenue (Detail)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Delrus Inc.
Revenue, Major Customer [Line Items]
Percentage of revenue derived from significant customer from Company's total product revenue		19.00%
Movaco, S.A.
Revenue, Major Customer [Line Items]
Percentage of revenue derived from significant customer from Company's total product revenue	19.00%	19.00%
Etablissement Francais du Sang
Revenue, Major Customer [Line Items]
Percentage of revenue derived from significant customer from Company's total product revenue	23.00%	16.00%

X

- Definition

Concentration Risk Percentage Of Revenues By Single Customer

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	duration

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- Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration