Segments (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2025 USD ($) segment	Mar. 31, 2024 USD ($)
Segment Reporting [Abstract]
Number of Reportable Segments | segment	3
Segment Reporting Information [Line Items]
Net sales	$ 322,054	$ 262,099
Cost of sales	235,690	169,857
Gross profit	86,364	92,242
Selling, general and administrative expenses	51,293	45,288
Add: Gain on disposal of assets	(40)	(16)
Income from operations	35,111	46,970
AAON Oklahoma
Segment Reporting Information [Line Items]
Net sales	161,838	210,140
Cost of sales	123,865	131,729
Gross profit	37,973	78,411
AAON Coil Products
Segment Reporting Information [Line Items]
Net sales	94,023	24,247
Cost of sales	61,538	16,107
Gross profit	32,485	8,140
BASX
Segment Reporting Information [Line Items]
Net sales	66,193	27,712
Cost of sales	50,287	22,021
Gross profit	15,906	5,691
Operating Segments | AAON Oklahoma
Segment Reporting Information [Line Items]
Net sales	161,838	210,140
Operating Segments | AAON Coil Products
Segment Reporting Information [Line Items]
Net sales	94,023	24,247
Operating Segments | BASX
Segment Reporting Information [Line Items]
Net sales	66,193	27,712
Inter-segment sales | AAON Oklahoma
Segment Reporting Information [Line Items]
Net sales	(3,839)	(1,671)
Inter-segment sales | AAON Coil Products
Segment Reporting Information [Line Items]
Net sales	(6,206)	(9,331)
Inter-segment sales | BASX
Segment Reporting Information [Line Items]
Net sales	(43)	(2)
Eliminations | AAON Oklahoma
Segment Reporting Information [Line Items]
Net sales	(3,839)	(1,671)
Eliminations | AAON Coil Products
Segment Reporting Information [Line Items]
Net sales	(6,206)	(9,331)
Eliminations | BASX
Segment Reporting Information [Line Items]
Net sales	$ (43)	$ (2)