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Deferred Revenue - Additional Information (Detail) (Nonsoftware License Arrangement [Member], Stem Cell Therapeutics [Member], USD $)
12 Months Ended
Dec. 31, 2013
Nonsoftware License Arrangement [Member] | Stem Cell Therapeutics [Member]
 
Deferred Revenue Arrangement [Line Items]  
Number of year up front license fee being amortized 12 years
Unamortized amount of deferred revenue $ 107,000
Deferred revenue, Prepaid orders for products $ 23,000