Quarterly report pursuant to Section 13 or 15(d)

Related-Party Transactions (Details)

v3.21.2
Related-Party Transactions (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Mar. 31, 2021
Sep. 30, 2020
Sep. 30, 2020
Sep. 30, 2021
Dec. 31, 2020
Other Current Liabilities | ILJIN          
Related Party Transaction [Line Items]          
Due to related parties       $ 2.0 $ 6.0
Milestone Payment | Affiliated Shareholder | ILJIN          
Related Party Transaction [Line Items]          
Payments to related party $ 4.0        
Due to related parties       $ 2.0  
Legal Fees | Management          
Related Party Transaction [Line Items]          
Expenses from related party   $ 0.1 $ 0.3