Quarterly report pursuant to Section 13 or 15(d)

Commitments - Narrative (Details)

v3.21.2
Commitments - Narrative (Details) - USD ($)
$ in Millions
9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Operating Leased Assets [Line Items]    
Rent expense $ 0.9 $ 0.2
Gulf Coast Environmental Systems, LLC ("GCES") | Affiliated Entity    
Operating Leased Assets [Line Items]    
Related-party lease payment $ 0.2  
Minimum    
Operating Leased Assets [Line Items]    
Lease term 1 year  
Maximum    
Operating Leased Assets [Line Items]    
Lease term 3 years