Annual report pursuant to Section 13 and 15(d)

Investments in Affiliated Companies - Summarized Income Statement (Details)

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Investments in Affiliated Companies - Summarized Income Statement (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Schedule of Equity Method Investments [Line Items]      
Gross profit $ 197,965 $ 224,630 $ 176,661
Operating income 96,650 104,385 54,607
Net income (loss) 71,154 73,697 (139,949)
Equity method investments      
Schedule of Equity Method Investments [Line Items]      
Sales 345,002 306,511 296,416
Gross profit 107,865 105,693 101,069
Operating income 70,783 67,169 66,978
Net income (loss) $ 74,053 $ 68,255 $ 68,433