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Segment Reporting (Narrative) (Details) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2022 USD ($) segment | Dec. 31, 2021 USD ($) | Dec. 31, 2020
Segment Reporting Information |  |  |
Number of reportable segments | segment | 2 |  |
Int'l |  |  |
Segment Reporting Information |  |  |
Long-lived assets | $ | $ 408.8 | $ 454.5 |
Product Concentration Risk | Aftermarket Segment | Net sales |  |  |
Segment Reporting Information |  |  |
Consolidated risk, percentage | 17.00% | 19.00% | 22.00%
Product Concentration Risk | OEM Segment | Net sales |  |  |
Segment Reporting Information |  |  |
Consolidated risk, percentage | 83.00% | 81.00% | 78.00%
Product Concentration Risk | Travel Trailer and Fifth Wheels | Net sales |  |  |
Segment Reporting Information |  |  |
Consolidated risk, percentage | 61.00% | 63.00% | 61.00%
Customer Concentration Risk | Net sales | Thor Industries, Inc. |  |  |
Segment Reporting Information |  |  |
Consolidated risk, percentage | 23.00% | 24.00% | 22.00%
Customer Concentration Risk | Net sales | Berkshire Hathaway Inc. |  |  |
Segment Reporting Information |  |  |
Consolidated risk, percentage | 20.00% | 20.00% | 19.00%
Customer Concentration Risk | Accounts Receivable | Berkshire Hathaway Inc. |  |  |
Segment Reporting Information |  |  |
Consolidated risk, percentage | 14.00% |  |

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