Revenue Recognition - Disaggregated Net Sales (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Disaggregation of Revenue [Line Items]
Net sales	$ 242,605	$ 138,571	$ 634,190	$ 398,235
AAON Oklahoma
Disaggregation of Revenue [Line Items]
Net sales	179,169	122,136	476,517	348,378
AAON Coil Products
Disaggregation of Revenue [Line Items]
Net sales	30,504	16,435	79,193	49,857
BasX
Disaggregation of Revenue [Line Items]
Net sales	32,932	0	78,480	0
Rooftop Units
Disaggregation of Revenue [Line Items]
Net sales	154,171	103,900	414,493	298,695
Rooftop Units | AAON Oklahoma
Disaggregation of Revenue [Line Items]
Net sales	154,171	103,900	414,493	298,695
Rooftop Units | AAON Coil Products
Disaggregation of Revenue [Line Items]
Net sales	0	0	0	0
Rooftop Units | BasX
Disaggregation of Revenue [Line Items]
Net sales	0	0	0	0
Condensing Units
Disaggregation of Revenue [Line Items]
Net sales	12,720	6,797	33,887	20,630
Condensing Units | AAON Oklahoma
Disaggregation of Revenue [Line Items]
Net sales	0	120	242	762
Condensing Units | AAON Coil Products
Disaggregation of Revenue [Line Items]
Net sales	12,720	6,677	33,645	19,868
Condensing Units | BasX
Disaggregation of Revenue [Line Items]
Net sales	0	0	0	0
Air Handlers
Disaggregation of Revenue [Line Items]
Net sales	16,591	6,279	41,853	19,958
Air Handlers | AAON Oklahoma
Disaggregation of Revenue [Line Items]
Net sales	0	0	0	0
Air Handlers | AAON Coil Products
Disaggregation of Revenue [Line Items]
Net sales	14,380	6,279	35,358	19,958
Air Handlers | BasX
Disaggregation of Revenue [Line Items]
Net sales	2,211	0	6,495	0
Outdoor Mechanical Rooms
Disaggregation of Revenue [Line Items]
Net sales	176	208	1,100	1,183
Outdoor Mechanical Rooms | AAON Oklahoma
Disaggregation of Revenue [Line Items]
Net sales	58	179	612	820
Outdoor Mechanical Rooms | AAON Coil Products
Disaggregation of Revenue [Line Items]
Net sales	118	29	488	363
Outdoor Mechanical Rooms | BasX
Disaggregation of Revenue [Line Items]
Net sales	0	0	0	0
Cleanroom Systems
Disaggregation of Revenue [Line Items]
Net sales	15,283		31,568
Cleanroom Systems | AAON Oklahoma
Disaggregation of Revenue [Line Items]
Net sales	0		0
Cleanroom Systems | AAON Coil Products
Disaggregation of Revenue [Line Items]
Net sales	0		0
Cleanroom Systems | BasX
Disaggregation of Revenue [Line Items]
Net sales	15,283		31,568
Data Center Cooling Solutions
Disaggregation of Revenue [Line Items]
Net sales	14,884		38,589
Data Center Cooling Solutions | AAON Oklahoma
Disaggregation of Revenue [Line Items]
Net sales	0		0
Data Center Cooling Solutions | AAON Coil Products
Disaggregation of Revenue [Line Items]
Net sales	0		0
Data Center Cooling Solutions | BasX
Disaggregation of Revenue [Line Items]
Net sales	14,884		38,589
Water-Source Heat Pumps
Disaggregation of Revenue [Line Items]
Net sales	5,681	5,215	14,694	16,305
Water-Source Heat Pumps | AAON Oklahoma
Disaggregation of Revenue [Line Items]
Net sales	3,236	2,536	8,098	8,993
Water-Source Heat Pumps | AAON Coil Products
Disaggregation of Revenue [Line Items]
Net sales	2,445	2,679	6,596	7,312
Water-Source Heat Pumps | BasX
Disaggregation of Revenue [Line Items]
Net sales	0	0	0	0
Part Sales
Disaggregation of Revenue [Line Items]
Net sales	15,900	12,102	40,304	30,325
Part Sales | AAON Oklahoma
Disaggregation of Revenue [Line Items]
Net sales	15,724	12,102	39,797	30,325
Part Sales | AAON Coil Products
Disaggregation of Revenue [Line Items]
Net sales	0	0	0	0
Part Sales | BasX
Disaggregation of Revenue [Line Items]
Net sales	176	0	507	0
Other
Disaggregation of Revenue [Line Items]
Net sales	7,199	4,070	17,702	11,139
Other | AAON Oklahoma
Disaggregation of Revenue [Line Items]
Net sales	5,980	3,299	13,275	8,783
Other | AAON Coil Products
Disaggregation of Revenue [Line Items]
Net sales	841	771	3,106	2,356
Other | BasX
Disaggregation of Revenue [Line Items]
Net sales	$ 378	$ 0	$ 1,321	$ 0