Quarterly report pursuant to Section 13 or 15(d)

Property, Plant and Equipment - Schedule of Depreciation, Amortization, Accretion, and Depletion (Details)

v3.21.1
Property, Plant and Equipment - Schedule of Depreciation, Amortization, Accretion, and Depletion (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Property, Plant and Equipment [Abstract]    
Depreciation expense $ 20,856 $ 25,600
Amortization expense 253 253
Accretion expense 37 29
Depreciation, depletion, amortization and accretion $ 21,146 $ 25,882