Annual report pursuant to Section 13 and 15(d)

Leases - Summary of Activity for ARO Liabilities (Detail)

v3.20.4
Leases - Summary of Activity for ARO Liabilities (Detail)
$ in Thousands
12 Months Ended
Dec. 31, 2020
USD ($)
Leases [Abstract]  
Balance as of December 31, 2019 $ 788
Accretion expense 78
Balance as of December 31, 2020 $ 866