Segments (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021
Segment Reporting Information [Line Items]
Net Sales	$ 182,771	$ 115,788
Gross Profit	46,064	33,157
Long-lived assets	283,232		$ 275,036
Goodwill	149,202		155,848
AAON Oklahoma
Segment Reporting Information [Line Items]
Net Sales	139,867	99,976
AAON Coil Products
Segment Reporting Information [Line Items]
Net Sales	21,935	15,812
BasX
Segment Reporting Information [Line Items]
Net Sales	20,969	0
Operating Segments | AAON Oklahoma
Segment Reporting Information [Line Items]
Gross Profit	33,836	29,772
Long-lived assets	190,621		183,840
Goodwill	3,229		3,229
Operating Segments | AAON Coil Products
Segment Reporting Information [Line Items]
Gross Profit	7,306	3,385
Long-lived assets	63,957		62,534
Goodwill	0		0
Operating Segments | BasX
Segment Reporting Information [Line Items]
Net Sales	20,969	0
Gross Profit	4,922	0
Long-lived assets	28,654		28,662
Goodwill	145,973		$ 152,619
Inter-segment | AAON Oklahoma
Segment Reporting Information [Line Items]
Net Sales	389	506
Inter-segment | AAON Coil Products
Segment Reporting Information [Line Items]
Net Sales	7,917	5,384
Segment Reconciling Items | AAON Oklahoma
Segment Reporting Information [Line Items]
Net Sales	139,867	99,976
Segment Reconciling Items | AAON Coil Products
Segment Reporting Information [Line Items]
Net Sales	21,935	15,812
Consolidation, Eliminations
Segment Reporting Information [Line Items]
Net Sales	$ (8,306)	$ (5,890)