Quarterly report pursuant to Section 13 or 15(d)

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

v3.10.0.1
Fair Value Measurements - Summary of Fair Value of Notes Payable (Details) - Fair value measurements, recurring - Significant Unobservable Inputs (Level 3)
$ in Thousands
9 Months Ended
Sep. 30, 2018
USD ($)
Notes Payable | VenturEast  
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]  
Fair value at December 31, 2017 $ 156
Fair value of warrants reclassified to equity 0
Change in fair value (68)
Fair value at September 30, 2018 88
Warrant liability  
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]  
Fair value at December 31, 2017 4,403
Fair value of warrants reclassified to equity (423)
Change in fair value (2,858)
Fair value at September 30, 2018 $ 1,122