Quarterly report pursuant to Section 13 or 15(d)

Contract Assets and Liabilities (Details)

v3.21.2
Contract Assets and Liabilities (Details) - USD ($)
$ in Thousands
Sep. 30, 2021
Dec. 31, 2020
Contract with Customer, Contract Asset, Contract Liability, and Receivable [Abstract]    
Contract assets $ 0 $ 0
Contract liabilities $ 0 $ 0