Annual report pursuant to Section 13 and 15(d)

Property, Plant and Equipment - Narratives (Details)

v3.20.4
Property, Plant and Equipment - Narratives (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Property, Plant and Equipment [Abstract]      
Depreciation $ 114,641 $ 111,032 $ 111,491