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Segment Reporting (Narrative) (Details) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2023 USD ($) segment | Dec. 31, 2022 USD ($) | Dec. 31, 2021
Segment Reporting Information |  |  |
Number of reportable segments | segment | 2 |  |
Int'l |  |  |
Segment Reporting Information |  |  |
Long-lived assets | $ | $ 399.4 | $ 408.8 |
Product Concentration Risk | Aftermarket Segment | Net sales |  |  |
Segment Reporting Information |  |  |
Consolidated risk, percentage | 23.00% | 17.00% | 19.00%
Product Concentration Risk | OEM Segment | Net sales |  |  |
Segment Reporting Information |  |  |
Consolidated risk, percentage | 77.00% | 83.00% | 81.00%
Product Concentration Risk | Travel Trailer and Fifth Wheels | Net sales |  |  |
Segment Reporting Information |  |  |
Consolidated risk, percentage | 47.00% | 61.00% | 63.00%
Customer Concentration Risk | Net sales | Thor Industries, Inc. |  |  |
Segment Reporting Information |  |  |
Consolidated risk, percentage | 16.00% | 23.00% | 24.00%
Customer Concentration Risk | Net sales | Berkshire Hathaway Inc. |  |  |
Segment Reporting Information |  |  |
Consolidated risk, percentage | 15.00% | 20.00% | 20.00%

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