Annual report pursuant to Section 13 and 15(d)

Investments in Affiliated Companies - Narratives (Details)

v3.20.4
Investments in Affiliated Companies - Narratives (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Mar. 31, 2020
Business Acquisition        
Liquidating dividend $ 729      
Sale of joint venture shares 1,032      
Amortization of investment in affiliate step-up (6,634) $ (7,534)    
Quaker Holdings        
Business Acquisition        
Ownership percentage       49.00%
Equity Method Investee        
Business Acquisition        
Due from related parties 3,814 3,586    
Related party sales 9,144 4,181 $ 2,823  
Purchases from related party 0      
Business Combination        
Business Acquisition        
Net purchase accounting fair value adjustments 243,899 250,532    
Amortization of investment in affiliate step-up $ 6,634 $ 7,534 $ 6,634