Quarterly report pursuant to Section 13 or 15(d)

Convertible Note Payable (Details)

v3.20.1
Convertible Note Payable (Details) - USD ($)
$ in Thousands
3 Months Ended
Jan. 24, 2019
Mar. 31, 2020
Mar. 31, 2019
Short-term Debt [Line Items]      
Outstanding principal and interest, convertible debt   $ 6,651
Interstate Battery Systems International, Inc.      
Short-term Debt [Line Items]      
Outstanding principal and interest, convertible debt $ 6,700    
Amortization of debt discount 2,600    
Deferred financing expenses $ 20,000