Debt Instrument, Applicable Margin

No definition available.

Name:	aaon_DebtInstrumentApplicableMargin
Namespace Prefix:	aaon_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Line of Credit Facility, Maximum Borrowing Capacity, Option

+ References

No definition available.

+ Details

Name:	aaon_LineOfCreditFacilityMaximumBorrowingCapacityOption
Namespace Prefix:	aaon_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of standby letter of credit outstanding under the revolving credit agreement.

+ References

No definition available.

+ Details

Name:	aaon_LineOfCreditFacilityStandbyLetterOfCredit
Namespace Prefix:	aaon_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Maximum Ratio of Total Liability to Net Worth Required for Compliance

+ References

No definition available.

+ Details

Name:	aaon_MaximumRatioOfTotalLiabilityToNetWorthRequiredForCompliance
Namespace Prefix:	aaon_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	instant

- Definition

Ratio of Total Liability to Net Worth

+ References

No definition available.

+ Details

Name:	aaon_RatioOfTotalLiabilityToNetWorth
Namespace Prefix:	aaon_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	instant

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 1B
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=123466505&loc=SL123495323-112611

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

+ Details

Name:	us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Weighted average interest rate of debt outstanding.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtWeightedAverageInterestRate
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

The fee, expressed as a percentage of the line of credit facility, for the line of credit facility regardless of whether the facility has been used.

+ References

No definition available.

+ Details

Name:	us-gaap_LineOfCreditFacilityCommitmentFeePercentage
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.19(b),22(b))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

+ Details

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

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:	us-gaap_LineOfCreditFacilityLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

+ Details

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

- Details

Name:	us-gaap_CreditFacilityAxis=us-gaap_RevolvingCreditFacilityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_VariableRateAxis=us-gaap_BaseRateMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_VariableRateAxis=aaon_SecuredOvernightFinancingRateSOFRMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RangeAxis=srt_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RangeAxis=srt_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_CreditFacilityAxis=us-gaap_LetterOfCreditMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Revolving Credit Facility (Details) - USD ($)	3 Months Ended
Revolving Credit Facility (Details) - USD ($)	Mar. 31, 2022	Nov. 24, 2021	Oct. 24, 2019
Line of Credit Facility [Line Items]
Ratio of total liability to net worth	0.63
Maximum ratio of total liability to net worth for compliance	3
Revolving Credit Facility
Line of Credit Facility [Line Items]
Credit facility maximum borrowings		$ 100,000,000	$ 23,000,000
Option to increase maximum borrowing capacity		$ 200,000,000
Standby letter of credit	$ 800,000
Borrowings available under the revolving credit facility	$ 34,200,000
Weighted average interest rate	1.30%
Revolving Credit Facility \| Base Rate
Line of Credit Facility [Line Items]
Stated percentage	0.50%
Revolving Credit Facility \| SOFR
Line of Credit Facility [Line Items]
Stated percentage	1.00%
Revolving Credit Facility \| Minimum
Line of Credit Facility [Line Items]
Applicable margin	1.25%
Commitment fee percentage	0.10%
Revolving Credit Facility \| Maximum
Line of Credit Facility [Line Items]
Applicable margin	1.75%
Commitment fee percentage	0.20%
Letter of Credit \| Minimum
Line of Credit Facility [Line Items]
Commitment fee percentage	1.25%
Letter of Credit \| Maximum
Line of Credit Facility [Line Items]
Commitment fee percentage	1.75%