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Commitments and Contingencies (Details)
$ in Millions
Jun. 30, 2016
USD ($)
Pre-clinical Research Study Obligations [Member]  
Recorded Unconditional Purchase Obligation [Line Items]  
Purchase obligation $ 4.8
Purchase obligation, due in next twelve months 3.8
Operating Lease Obligations [Member]  
Recorded Unconditional Purchase Obligation [Line Items]  
Contractual obligation 3.1
Contractual obligation, due in next twelve months 2.3
Roche Diagnostics Corporation [Member]  
Recorded Unconditional Purchase Obligation [Line Items]  
Purchase obligation 5.9
Purchase obligation, due in next twelve months $ 1.3