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Inventories - Allowance (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Inventory Valuation Reserves [Roll Forward]
Balance, beginning of period	$ 5,480	$ 6,801	$ 5,192	$ 6,160
Provision (recovery of) for excess and obsolete inventories	785	2,075	1,417	4,003
Inventories written off	(48)	(868)	(392)	(2,155)
Balance, end of period	$ 6,217	$ 8,008	$ 6,217	$ 8,008

X

- Definition

Charge to expense for inventory that is expected to be excess or obsolete.

+ References

No definition available.

+ Details

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Namespace Prefix:	aaon_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Inventory Valuation Reserves [Roll Forward]

+ References

No definition available.

+ Details

Name:	aaon_InventoryValuationReservesRollForward
Namespace Prefix:	aaon_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Inventory that is written off due to being excess or obsolete.

+ References

No definition available.

+ Details

Name:	aaon_InventoryValuationReservesWriteOffs
Namespace Prefix:	aaon_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Amount of valuation reserve for inventory.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 330
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 2
-Subparagraph (SAB Topic 5.BB)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480581/330-10-S99-2

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(6))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant