Annual report pursuant to Section 13 and 15(d)

Investments in Affiliated Companies - Summarized Balance Sheet (Details)

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Investments in Affiliated Companies - Summarized Balance Sheet (Details) - USD ($)
$ in Thousands
Dec. 31, 2021
Dec. 31, 2020
Schedule of Equity Method Investments [Line Items]    
Current assets $ 291,669 $ 428,667
Current liabilities 145,081 201,865
Equity method investments    
Schedule of Equity Method Investments [Line Items]    
Current assets 245,859 217,836
Noncurrent assets 223,982 254,397
Current liabilities 43,337 65,958
Noncurrent liabilities $ 7,471 $ 36,323