Quarterly report pursuant to Section 13 or 15(d)

Financial Instruments Fair Value Measurements - Schedule of Financial Liabilities Measured at Fair Value on Recurring Basis (Details)

v3.20.2
Financial Instruments Fair Value Measurements - Schedule of Financial Liabilities Measured at Fair Value on Recurring Basis (Details) - USD ($)
$ in Thousands
Jun. 30, 2020
Dec. 31, 2019
Fair value of liability [1] $ 16,200 $ 8,139
November 2019 Senior Secured Convertible Notes [Member]    
Fair value of liability [1] 12,300 6,439
April 2020 Senior Secured Convertible Notes [Member]    
Fair value of liability [1] 3,900  
December 2018 Senior Convertible Note [Member]    
Fair value of liability [1]   1,700
Fair Value, Inputs, Level 1 [Member]    
Fair value of liability [1]
Fair Value, Inputs, Level 1 [Member] | November 2019 Senior Secured Convertible Notes [Member]    
Fair value of liability [1]
Fair Value, Inputs, Level 1 [Member] | April 2020 Senior Secured Convertible Notes [Member]    
Fair value of liability [1]  
Fair Value, Inputs, Level 1 [Member] | December 2018 Senior Convertible Note [Member]    
Fair value of liability [1]  
Fair Value, Inputs, Level 2 [Member]    
Fair value of liability [1]
Fair Value, Inputs, Level 2 [Member] | November 2019 Senior Secured Convertible Notes [Member]    
Fair value of liability [1]
Fair Value, Inputs, Level 2 [Member] | April 2020 Senior Secured Convertible Notes [Member]    
Fair value of liability [1]  
Fair Value, Inputs, Level 2 [Member] | December 2018 Senior Convertible Note [Member]    
Fair value of liability [1]  
Fair Value, Inputs, Level 3 [Member]    
Fair value of liability [1] 16,200 8,139
Fair Value, Inputs, Level 3 [Member] | November 2019 Senior Secured Convertible Notes [Member]    
Fair value of liability [1] 12,300 6,439
Fair Value, Inputs, Level 3 [Member] | April 2020 Senior Secured Convertible Notes [Member]    
Fair value of liability [1] $ 3,900  
Fair Value, Inputs, Level 3 [Member] | December 2018 Senior Convertible Note [Member]    
Fair value of liability [1]   $ 1,700
[1] As noted above, as presented in the fair value hierarchy table, Level-1 represents quoted prices in active markets for identical items, Level-2 represents significant other observable inputs, and Level-3 represents significant unobservable inputs. There were no transfers between the respective Levels during the six-month period ended June 30, 2020.