Quarterly report pursuant to Section 13 or 15(d)

Related-Party Transactions (Details)

v3.21.1
Related-Party Transactions (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Dec. 31, 2020
Other Liabilities | ILJIN      
Related Party Transaction [Line Items]      
Due to related parties $ 2,000   $ 6,000
Milestone Payment | Affiliated Shareholder | ILJIN      
Related Party Transaction [Line Items]      
Payments to related party $ 4,000    
Legal Fees | Management      
Related Party Transaction [Line Items]      
Expenses from related party   $ 63