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Commitments and Contingencies (Details)
$ in Millions
Mar. 31, 2016
USD ($)
Pre-clinical Research Study Obligations [Member]  
Recorded Unconditional Purchase Obligation [Line Items]  
Purchase obligation $ 5.1
Purchase obligation, due in next twelve months 4.2
Operating Lease Obligations [Member]  
Recorded Unconditional Purchase Obligation [Line Items]  
Contractual obligation 3.6
Contractual obligation, due in next twelve months 2.3
Roche Diagnostics Corporation [Member]  
Recorded Unconditional Purchase Obligation [Line Items]  
Purchase obligation 6.0
Purchase obligation, due in next twelve months $ 1.2