Annual report pursuant to Section 13 and 15(d)

Reportable Segments - Narratives (Details)

v3.20.4
Reportable Segments - Narratives (Details)
$ in Thousands
12 Months Ended
Dec. 31, 2020
USD ($)
Dec. 31, 2020
segment
Dec. 31, 2020
Dec. 31, 2019
USD ($)
Dec. 31, 2018
USD ($)
Segment Reporting [Abstract]          
Number of operating segments   3 3    
Reportable segments   3 3    
Equity in net income from affiliated companies $ 21,237     $ 46,022 $ 37,569