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Warranties - Warranty Expense by Segment (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024
Segment Reporting Information [Line Items] |  |  |  |
Provisions | $ 8,905 | $ 4,670 | $ 15,715 | $ 11,388
AAON Oklahoma |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Provisions | 6,224 | 3,336 | 11,101 | 9,332
AAON Coil Products |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Provisions | 2,144 | 803 | 3,004 | 1,323
BasX |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Provisions | $ 537 | $ 531 | $ 1,610 | $ 733

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- Definition Amount of increase in the standard product warranty accrual from warranties issued. Excludes extended product warranties. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 460 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 8 -Subparagraph (c)(3) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482425/460-10-50-8 + Details
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