Segment Reporting (Schedule of Operating Profit by Segment) (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Segment Reporting Information
Operating profit	$ 45,590	$ 87,575	$ 120,807	$ 576,065
Operating Segments \| OEM Segment
Segment Reporting Information
Operating profit	11,165	65,186	29,086	501,137
Operating Segments \| Aftermarket Segment
Segment Reporting Information
Operating profit	$ 34,425	$ 22,389	$ 91,721	$ 74,928

The net result for the period of deducting operating expenses from operating revenues.

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