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Revenue Recognition - Schedule of Disaggregation of Revenue (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2025 | Dec. 31, 2024 | Dec. 31, 2023
Disaggregation of Revenue [Line Items] |  |  |
Net sales | $ 1,442,076 | $ 1,200,635 | $ 1,168,518
AAON-branded Products |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Net sales | 894,282 | 975,642 | 1,001,992
BASX-branded Products |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Net sales | 547,794 | 224,993 | 166,526
AAON Oklahoma |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Net sales | 801,209 | 858,711 | 897,919
AAON Oklahoma | AAON-branded Products |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Net sales | 798,207 | 858,711 | 897,919
AAON Oklahoma | BASX-branded Products |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Net sales | 3,002 | 0 | 0
AAON Coil Products |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Net sales | 325,353 | 143,871 | 112,320
AAON Coil Products | AAON-branded Products |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Net sales | 96,075 | 116,931 | 104,073
AAON Coil Products | BASX-branded Products |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Net sales | 229,278 | 26,940 | 8,247
BasX |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Net sales | 315,514 | 198,053 | 158,279
BasX | AAON-branded Products |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Net sales | 0 | 0 | 0
BasX | BASX-branded Products |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Net sales | $ 315,514 | $ 198,053 | $ 158,279

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