Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements - Summary of Fair Value of Notes Payable (Details)

v3.5.0.2
Fair Value Measurements - Summary of Fair Value of Notes Payable (Details) - Significant Unobservable Inputs (Level 3) - Fair value measurements, recurring
$ in Thousands
9 Months Ended
Sep. 30, 2016
USD ($)
BioServe  
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]  
Beginning balance $ 266
Change in fair value (119)
Ending balance 147
Warrant liability  
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]  
Beginning balance 17
Change in fair value (729)
Ending balance 2,814
2016 Offering | Warrant liability  
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]  
2016 Offerings 3,526
VenturEast | 2016 Offering  
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]  
2016 Offerings $ 0