Revenue Recognition - Disaggregated Net Sales (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Disaggregation of Revenue [Line Items]
Net sales	$ 208,814	$ 143,876	$ 391,585	$ 259,664
AAON Oklahoma
Disaggregation of Revenue [Line Items]
Net sales	157,481	126,266	297,348	226,242
AAON Coil Products
Disaggregation of Revenue [Line Items]
Net sales	26,754	17,610	48,689	33,422
BasX
Disaggregation of Revenue [Line Items]
Net sales	24,579	0	45,548	0
Rooftop Units
Disaggregation of Revenue [Line Items]
Net sales	138,616	107,370	260,322	194,795
Rooftop Units | AAON Oklahoma
Disaggregation of Revenue [Line Items]
Net sales	138,616	107,370	260,322	194,795
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	11,949	7,302	21,167	13,833
Condensing Units | AAON Oklahoma
Disaggregation of Revenue [Line Items]
Net sales	0	393	242	642
Condensing Units | AAON Coil Products
Disaggregation of Revenue [Line Items]
Net sales	11,949	6,909	20,925	13,191
Condensing Units | BasX
Disaggregation of Revenue [Line Items]
Net sales	0	0	0	0
Air Handlers
Disaggregation of Revenue [Line Items]
Net sales	14,485	7,265	25,262	13,679
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	11,540	7,265	20,978	13,679
Air Handlers | BasX
Disaggregation of Revenue [Line Items]
Net sales	2,945	0	4,284	0
Outdoor Mechanical Rooms
Disaggregation of Revenue [Line Items]
Net sales	260	764	924	975
Outdoor Mechanical Rooms | AAON Oklahoma
Disaggregation of Revenue [Line Items]
Net sales	0	578	554	641
Outdoor Mechanical Rooms | AAON Coil Products
Disaggregation of Revenue [Line Items]
Net sales	260	186	370	334
Outdoor Mechanical Rooms | BasX
Disaggregation of Revenue [Line Items]
Net sales	0	0	0	0
Cleanroom Systems
Disaggregation of Revenue [Line Items]
Net sales	8,246		16,285
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	8,246		16,285
Data Center Cooling Solutions
Disaggregation of Revenue [Line Items]
Net sales	12,837		23,705
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	12,837		23,705
Water-Source Heat Pumps
Disaggregation of Revenue [Line Items]
Net sales	3,674	6,425	9,013	11,090
Water-Source Heat Pumps | AAON Oklahoma
Disaggregation of Revenue [Line Items]
Net sales	1,876	4,069	4,862	6,457
Water-Source Heat Pumps | AAON Coil Products
Disaggregation of Revenue [Line Items]
Net sales	1,798	2,356	4,151	4,633
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	14,188	10,717	24,404	18,223
Part Sales | AAON Oklahoma
Disaggregation of Revenue [Line Items]
Net sales	13,857	10,717	24,073	18,223
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	331	0	331	0
Other
Disaggregation of Revenue [Line Items]
Net sales	4,559	4,033	10,503	7,069
Other | AAON Oklahoma
Disaggregation of Revenue [Line Items]
Net sales	3,132	3,139	7,295	5,484
Other | AAON Coil Products
Disaggregation of Revenue [Line Items]
Net sales	1,207	894	2,265	1,585
Other | BasX
Disaggregation of Revenue [Line Items]
Net sales	$ 220	$ 0	$ 943	$ 0