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Segments (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2025 USD ($)	Sep. 30, 2024 USD ($)	Sep. 30, 2025 USD ($) segment	Sep. 30, 2024 USD ($)
Segment Reporting [Abstract]
Number of Reportable Segments | segment			3
Segment Reporting Information [Line Items]
Net sales	$ 384,238	$ 327,252	$ 1,017,859	$ 902,917
Cost of sales	277,377	213,094	741,905	583,423
Gross profit	106,861	114,158	275,954	319,494
Selling, general and administrative expenses	63,230	48,637	173,670	139,820
Add: Gain on disposal of assets	(36)	(1)	4	15
Income from operations	43,595	65,520	102,288	179,689
AAON Oklahoma
Segment Reporting Information [Line Items]
Net sales	238,748	228,887	585,706	664,754
Cost of sales	163,519	144,768	421,621	418,354
Gross profit	75,229	84,119	164,085	246,400
AAON Coil Products
Segment Reporting Information [Line Items]
Net sales	70,246	35,232	222,734	90,852
Cost of sales	58,914	22,811	166,054	57,133
Gross profit	11,332	12,421	56,680	33,719
BASX
Segment Reporting Information [Line Items]
Net sales	75,244	63,133	209,419	147,311
Cost of sales	54,944	45,515	154,230	107,936
Gross profit	20,300	17,618	55,189	39,375
Operating Segments | AAON Oklahoma
Segment Reporting Information [Line Items]
Net sales	238,748	228,887	585,706	664,754
Operating Segments | AAON Coil Products
Segment Reporting Information [Line Items]
Net sales	70,246	35,232	222,734	90,852
Operating Segments | BASX
Segment Reporting Information [Line Items]
Net sales	75,244	63,133	209,419	147,311
Inter-segment sales | AAON Oklahoma
Segment Reporting Information [Line Items]
Net sales	(9,737)	(1,238)	(18,894)	(4,220)
Inter-segment sales | AAON Coil Products
Segment Reporting Information [Line Items]
Net sales	(8,263)	(12,292)	(20,542)	(30,565)
Inter-segment sales | BASX
Segment Reporting Information [Line Items]
Net sales	(26)	(40)	(576)	(262)
Eliminations | AAON Oklahoma
Segment Reporting Information [Line Items]
Net sales	(9,737)	(1,238)	(18,894)	(4,220)
Eliminations | AAON Coil Products
Segment Reporting Information [Line Items]
Net sales	(8,263)	(12,292)	(20,542)	(30,565)
Eliminations | BASX
Segment Reporting Information [Line Items]
Net sales	$ (26)	$ (40)	$ (576)	$ (262)

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The aggregate costs related to goods produced and sold and services rendered by an entity during the reporting period. This excludes costs incurred during the reporting period related to financial services rendered and other revenue generating activities.

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