Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements - Narrative (Details)

v3.10.0.1
Fair Value Measurements - Narrative (Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended
Jun. 30, 2018
Jun. 30, 2017
Mar. 31, 2018
Mar. 31, 2017
Sep. 28, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Change in fair value of convertible note embedded derivative liability $ 1,620 $ (1,308)      
Stock price (in dollars per share) $ 1.51 $ 1.03 $ 2.01 $ 0.94  
Change in fair value of warrant liability $ 1,570 $ (464)      
Convertible notes          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Original discount         $ 4,916
Convertible note embedded derivative liability          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Stock price (in dollars per share) $ 1.51