$AAON
AAON, INC. Stock $aaon

$aaon Overview Financials Valuation SEC Filings Company Website

2018 Q4 Form 10-K Financial Statement

#000082414220000025 Filed on February 27, 2020

Income Statement

Concept	2018 Q4	2018 Q3	2018 Q2
Revenue	$112.3M	$112.9M	$109.6M
YoY Change	7.85%	-0.64%	8.15%
Cost Of Revenue	$84.49M	$80.11M	$81.93M
YoY Change	15.59%	2.69%	17.63%
Gross Profit	$27.85M	$32.83M	$27.66M
YoY Change	-10.39%	-7.93%	-12.68%
Gross Profit Margin	24.79%	29.07%	25.24%
Selling, General & Admin	$10.72M	$12.67M	$13.15M
YoY Change	-20.57%	-2.82%	9.87%
% of Gross Profit	38.51%	38.58%	47.55%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$4.800M	$4.500M	$4.300M
YoY Change	20.0%	21.62%	16.22%
% of Gross Profit	17.24%	13.71%	15.55%
Operating Expenses	$10.72M	$12.67M	$13.15M
YoY Change	-21.73%	-2.82%	9.87%
Operating Profit	$17.13M	$20.16M	$14.51M
YoY Change	-1.43%	-10.89%	-26.18%
Interest Expense	$0.00	$0.00	$100.0K
YoY Change	-100.0%	-100.0%	0.0%
% of Operating Profit	0.0%	0.0%	0.69%
Other Income/Expense, Net	-$58.00K	$5.000K	$12.00K
YoY Change		-87.8%	-64.71%
Pretax Income	$17.09M	$20.20M	$14.59M
YoY Change	-2.33%	-11.2%	-26.17%
Income Tax	$4.129M	$5.688M	$2.894M
% Of Pretax Income	24.16%	28.16%	19.83%
Net Earnings	$12.96M	$14.51M	$11.70M
YoY Change	-17.79%	-1.38%	-15.2%
Net Earnings / Revenue	11.54%	12.85%	10.67%
Basic Earnings Per Share	$0.25	$0.28	$0.22
Diluted Earnings Per Share	$0.25	$0.27	$0.22
COMMON SHARES
Basic Shares Outstanding	52.09M shares	52.24M shares	52.38M shares
Diluted Shares Outstanding	52.42M shares	52.63M shares	52.72M shares

Balance Sheet

Concept	2018 Q4	2018 Q3	2018 Q2
SHORT-TERM ASSETS
Cash & Short-Term Investments	$2.000M	$10.70M	$24.30M
YoY Change	-93.42%	-73.18%	-53.09%
Cash & Equivalents	$1.994M	$7.265M	$15.85M
Short-Term Investments		$3.400M	$8.500M
Other Short-Term Assets	$1.000M	$1.300M	$1.500M
YoY Change	100.0%	62.5%	66.67%
Inventory	$77.61M	$79.18M	$70.47M
Prepaid Expenses
Receivables	$54.08M	$51.21M	$53.42M
Other Receivables	$5.900M	$2.300M	$5.000M
Total Short-Term Assets	$140.7M	$144.5M	$154.4M
YoY Change	-8.5%	-11.98%	-3.31%
LONG-TERM ASSETS
Property, Plant & Equipment	$163.0M	$164.9M	$161.1M
YoY Change	14.49%	19.22%	29.28%
Goodwill	$3.229M	$3.229M	$3.229M
YoY Change
Intangibles
YoY Change
Long-Term Investments
YoY Change
Other Assets
YoY Change
Total Long-Term Assets	$167.3M	$169.3M	$165.6M
YoY Change	16.97%	21.82%	32.17%
TOTAL ASSETS
Total Short-Term Assets	$140.7M	$144.5M	$154.4M
Total Long-Term Assets	$167.3M	$169.3M	$165.6M
Total Assets	$308.0M	$313.8M	$320.0M
YoY Change	3.78%	3.52%	12.29%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$10.62M	$16.22M	$25.13M
YoY Change	-3.2%	-14.31%	78.1%
Accrued Expenses	$36.88M	$37.49M	$38.15M
YoY Change	-5.69%	-10.05%	11.24%
Deferred Revenue	$2.367M
YoY Change
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$47.49M	$53.07M	$70.96M
YoY Change	-5.14%	-12.45%	28.44%
LONG-TERM LIABILITIES
Long-Term Debt	$0.00	$0.00	$0.00
YoY Change
Other Long-Term Liabilities	$1.800M	$1.800M	$1.700M
YoY Change	20.0%	20.0%	-19.05%
Total Long-Term Liabilities	$1.800M	$1.800M	$1.700M
YoY Change	20.0%	20.0%	-19.05%
TOTAL LIABILITIES
Total Short-Term Liabilities	$47.49M	$53.07M	$70.96M
Total Long-Term Liabilities	$1.800M	$1.800M	$1.700M
Total Liabilities	$58.60M	$64.40M	$81.80M
YoY Change	-1.68%	-11.54%	21.55%
SHAREHOLDERS EQUITY
Retained Earnings	$249.2M	$249.4M	$238.2M
YoY Change	5.16%	8.4%	9.51%
Common Stock	$208.0K	$209.0K	$209.0K
YoY Change	-0.95%	-0.48%	-0.48%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$249.4M	$249.6M	$238.4M
YoY Change
Total Liabilities & Shareholders Equity	$308.0M	$314.0M	$320.3M
YoY Change	3.78%	3.59%	12.37%

Cashflow Statement

Concept	2018 Q4	2018 Q3	2018 Q2
OPERATING ACTIVITIES
Net Income	$12.96M	$14.51M	$11.70M
YoY Change	-17.79%	-1.38%	-15.2%
Depreciation, Depletion And Amortization	$4.800M	$4.500M	$4.300M
YoY Change	20.0%	21.62%	16.22%
Cash From Operating Activities	$10.70M	$8.000M	$25.50M
YoY Change	-33.54%	-1.23%	8.05%
INVESTING ACTIVITIES
Capital Expenditures	-$3.000M	-$8.400M	-$17.40M
YoY Change	-80.39%	-12.5%	62.62%
Acquisitions
YoY Change
Other Investing Activities	$3.400M	$5.100M	$6.100M
YoY Change	-54.67%	168.42%	-176.25%
Cash From Investing Activities	$500.0K	-$3.300M	-$11.40M
YoY Change	-106.33%	-57.14%	-39.36%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-16.40M	-13.30M	-6.400M
YoY Change	59.22%	27.88%	120.69%
NET CHANGE
Cash From Operating Activities	10.70M	8.000M	25.50M
Cash From Investing Activities	500.0K	-3.300M	-11.40M
Cash From Financing Activities	-16.40M	-13.30M	-6.400M
Net Change In Cash	-5.200M	-8.600M	7.700M
YoY Change	147.62%	-14.0%	305.26%
FREE CASH FLOW
Cash From Operating Activities	$10.70M	$8.000M	$25.50M
Capital Expenditures	-$3.000M	-$8.400M	-$17.40M
Free Cash Flow	$13.70M	$16.40M	$42.90M
YoY Change	-56.37%	-7.34%	25.07%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2019	dei	Entity Central Index Key EntityCentralIndexKey	0000824142
CY2019	dei	Amendment Flag AmendmentFlag	false
CY2019	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2019	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2019	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2019
CY2019	aaon	Extended Product Warranties Minimum Length ExtendedProductWarrantiesMinimumLength	P6M
CY2019	dei	Document Type DocumentType	10-K
CY2019	dei	Document Annual Report DocumentAnnualReport	true
CY2019	dei	Entity Registrant Name EntityRegistrantName	AAON, INC.
CY2019	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	NV
CY2019	dei	Document Period End Date DocumentPeriodEndDate	2019-12-31
CY2019	dei	Document Transition Report DocumentTransitionReport	false
CY2019	dei	Entity File Number EntityFileNumber	0-18953
CY2019	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	87-0448736
CY2019	dei	Entity Address Address Line1 EntityAddressAddressLine1	2425 South Yukon Ave.,
CY2019	dei	Entity Address City Or Town EntityAddressCityOrTown	Tulsa,
CY2019	dei	Entity Address State Or Province EntityAddressStateOrProvince	OK
CY2019	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	74107
CY2019	dei	City Area Code CityAreaCode	918
CY2019	dei	Local Phone Number LocalPhoneNumber	583-2266
CY2019	dei	Security12b Title Security12bTitle	Common Stock
CY2019	dei	Trading Symbol TradingSymbol	AAON
CY2019	dei	Security Exchange Name SecurityExchangeName	NASDAQ
CY2019	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	No
CY2019	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2019	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2019	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
CY2019	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2019	dei	Entity Small Business EntitySmallBusiness	false
CY2019	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
CY2019	dei	Entity Shell Company EntityShellCompany	false
CY2019Q2	dei	Entity Public Float EntityPublicFloat	2035200000	USD
CY2020Q1	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	52092212	shares
CY2019Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	26797000	USD
CY2018Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	1994000	USD
CY2019Q4	us-gaap	Restricted Cash RestrictedCash	17576000	USD
CY2018Q4	us-gaap	Restricted Cash RestrictedCash	0	USD
CY2019Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	67399000	USD
CY2018Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	54078000	USD
CY2019Q4	us-gaap	Income Taxes Receivable IncomeTaxesReceivable	772000	USD
CY2018Q4	us-gaap	Income Taxes Receivable IncomeTaxesReceivable	5901000	USD
CY2019Q4	us-gaap	Notes And Loans Receivable Net Current NotesAndLoansReceivableNetCurrent	29000	USD
CY2018Q4	us-gaap	Notes And Loans Receivable Net Current NotesAndLoansReceivableNetCurrent	27000	USD
CY2019Q4	us-gaap	Inventory Net InventoryNet	73601000	USD
CY2018Q4	us-gaap	Inventory Net InventoryNet	77612000	USD
CY2019Q4	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	1375000	USD
CY2018Q4	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	1046000	USD
CY2019Q4	us-gaap	Assets Current AssetsCurrent	187549000	USD
CY2018Q4	us-gaap	Assets Current AssetsCurrent	140658000	USD
CY2019Q4	us-gaap	Land Land	3274000	USD
CY2018Q4	us-gaap	Land Land	3114000	USD
CY2019Q4	us-gaap	Buildings And Improvements Gross BuildingsAndImprovementsGross	101113000	USD
CY2018Q4	us-gaap	Buildings And Improvements Gross BuildingsAndImprovementsGross	97393000	USD
CY2019Q4	us-gaap	Machinery And Equipment Gross MachineryAndEquipmentGross	236087000	USD
CY2018Q4	us-gaap	Machinery And Equipment Gross MachineryAndEquipmentGross	212779000	USD
CY2019Q4	us-gaap	Furniture And Fixtures Gross FurnitureAndFixturesGross	16862000	USD
CY2018Q4	us-gaap	Furniture And Fixtures Gross FurnitureAndFixturesGross	16597000	USD
CY2019Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	357336000	USD
CY2018Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	329883000	USD
CY2019Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	179242000	USD
CY2018Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	166880000	USD
CY2019Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	178094000	USD
CY2018Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	163003000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	272000	USD
CY2018Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	506000	USD
CY2019Q4	us-gaap	Goodwill Goodwill	3229000	USD
CY2018Q4	us-gaap	Goodwill Goodwill	3229000	USD
CY2019Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	1683000	USD
CY2019Q4	us-gaap	Notes And Loans Receivable Net Noncurrent NotesAndLoansReceivableNetNoncurrent	597000	USD
CY2018Q4	us-gaap	Notes And Loans Receivable Net Noncurrent NotesAndLoansReceivableNetNoncurrent	598000	USD
CY2019Q4	us-gaap	Assets Assets	371424000	USD
CY2018Q4	us-gaap	Assets Assets	307994000	USD
CY2019Q4	us-gaap	Lines Of Credit Current LinesOfCreditCurrent	0	USD
CY2018Q4	us-gaap	Lines Of Credit Current LinesOfCreditCurrent	0	USD
CY2019Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	11759000	USD
CY2018Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	10616000	USD
CY2019Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	44269000	USD
CY2018Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	36875000	USD
CY2019Q4	us-gaap	Liabilities Current LiabilitiesCurrent	56028000	USD
CY2018Q4	us-gaap	Liabilities Current LiabilitiesCurrent	47491000	USD
CY2019Q4	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	15297000	USD
CY2018Q4	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	9259000	USD
CY2019Q4	us-gaap	Other Accrued Liabilities Noncurrent OtherAccruedLiabilitiesNoncurrent	3639000	USD
CY2018Q4	us-gaap	Other Accrued Liabilities Noncurrent OtherAccruedLiabilitiesNoncurrent	1801000	USD
CY2019Q4	us-gaap	Long Term Line Of Credit LongTermLineOfCredit	6320000	USD
CY2018Q4	us-gaap	Long Term Line Of Credit LongTermLineOfCredit	0	USD
CY2019Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2018Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2019Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.001
CY2018Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.001
CY2019Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	5000000	shares
CY2018Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	5000000	shares
CY2018Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2019Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2019Q4	us-gaap	Preferred Stock Value PreferredStockValue	0	USD
CY2018Q4	us-gaap	Preferred Stock Value PreferredStockValue	0	USD
CY2019Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.004
CY2018Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.004
CY2019Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	100000000	shares
CY2018Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	100000000	shares
CY2019Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	52078515	shares
CY2019Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	52078515	shares
CY2018Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	51991242	shares
CY2018Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	51991242	shares
CY2019Q4	us-gaap	Common Stock Value CommonStockValue	208000	USD
CY2018Q4	us-gaap	Common Stock Value CommonStockValue	208000	USD
CY2019Q4	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	3631000	USD
CY2018Q4	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	0	USD
CY2019Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	286301000	USD
CY2018Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	249235000	USD
CY2019Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	290140000	USD
CY2018Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	249443000	USD
CY2019Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	371424000	USD
CY2018Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	307994000	USD
CY2019	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	469333000	USD
CY2018	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	433947000	USD
CY2017	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	405232000	USD
CY2019	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	349908000	USD
CY2018	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	330414000	USD
CY2017	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	281581000	USD
CY2019	us-gaap	Gross Profit GrossProfit	119425000	USD
CY2018	us-gaap	Gross Profit GrossProfit	103533000	USD
CY2017	us-gaap	Gross Profit GrossProfit	123651000	USD
CY2019	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	52077000	USD
CY2018	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	48194000	USD
CY2017	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	49371000	USD
CY2019	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	-337000	USD
CY2018	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	12000	USD
CY2017	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	-45000	USD
CY2019	us-gaap	Operating Income Loss OperatingIncomeLoss	67011000	USD
CY2018	us-gaap	Operating Income Loss OperatingIncomeLoss	55351000	USD
CY2017	us-gaap	Operating Income Loss OperatingIncomeLoss	74235000	USD
CY2019	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	66000	USD
CY2018	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	196000	USD
CY2017	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	298000	USD
CY2019	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-46000	USD
CY2018	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-47000	USD
CY2017	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	91000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	67031000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	55500000	USD
CY2017	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	74624000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	13320000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	13171000	USD
CY2017	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	20794000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	53711000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	42329000	USD
CY2017	us-gaap	Net Income Loss NetIncomeLoss	53830000	USD
CY2019	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.03
CY2018	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.81
CY2017	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.02
CY2019	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.02
CY2018	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.80
CY2017	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.01
CY2019	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.32
CY2018	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.32
CY2017	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.26
CY2019	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	52079865	shares
CY2018	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	52284616	shares
CY2017	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	52572496	shares
CY2019	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	52635415	shares
CY2018	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	52667939	shares
CY2017	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	53078734	shares
CY2016Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	208410000	USD
CY2016Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	208410000	USD
CY2017	us-gaap	Net Income Loss NetIncomeLoss	53830000	USD
CY2017	us-gaap	Net Income Loss NetIncomeLoss	53830000	USD
CY2017	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	2259000	USD
CY2017	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	2259000	USD
CY2017	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	6313000	USD
CY2017	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	6313000	USD
CY2017	us-gaap	Stock Repurchased And Retired During Period Value StockRepurchasedAndRetiredDuringPeriodValue	18234000	USD
CY2017	us-gaap	Stock Repurchased And Retired During Period Value StockRepurchasedAndRetiredDuringPeriodValue	18234000	USD
CY2017	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	13653000	USD
CY2017	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	13653000	USD
CY2017Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	238925000	USD
CY2017Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	238925000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	42329000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	42329000	USD
CY2018	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	4987000	USD
CY2018	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	4987000	USD
CY2018	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	7862000	USD
CY2018	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	7862000	USD
CY2018	us-gaap	Stock Repurchased And Retired During Period Value StockRepurchasedAndRetiredDuringPeriodValue	27943000	USD
CY2018	us-gaap	Stock Repurchased And Retired During Period Value StockRepurchasedAndRetiredDuringPeriodValue	27943000	USD
CY2018	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	16717000	USD
CY2018	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	16717000	USD
CY2018Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	249443000	USD
CY2018Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	249443000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	53711000	USD
CY2019	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	12625000	USD
CY2019	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	11799000	USD
CY2019	us-gaap	Stock Repurchased And Retired During Period Value StockRepurchasedAndRetiredDuringPeriodValue	20793000	USD
CY2019	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	16645000	USD
CY2019Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	290140000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	53711000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	42329000	USD
CY2017	us-gaap	Net Income Loss NetIncomeLoss	53830000	USD
CY2019	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	22766000	USD
CY2018	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	17655000	USD
CY2017	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	15007000	USD
CY2019	us-gaap	Investment Income Amortization Of Premium InvestmentIncomeAmortizationOfPremium	0	USD
CY2018	us-gaap	Investment Income Amortization Of Premium InvestmentIncomeAmortizationOfPremium	13000	USD
CY2017	us-gaap	Investment Income Amortization Of Premium InvestmentIncomeAmortizationOfPremium	47000	USD
CY2019	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	7000	USD
CY2018	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	0	USD
CY2017	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	0	USD
CY2019	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	91000	USD
CY2018	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	174000	USD
CY2017	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	179000	USD
CY2019	us-gaap	Inventory Write Down InventoryWriteDown	1454000	USD
CY2018	us-gaap	Inventory Write Down InventoryWriteDown	152000	USD
CY2017	us-gaap	Inventory Write Down InventoryWriteDown	264000	USD
CY2019	us-gaap	Share Based Compensation ShareBasedCompensation	11799000	USD
CY2018	us-gaap	Share Based Compensation ShareBasedCompensation	7862000	USD
CY2017	us-gaap	Share Based Compensation ShareBasedCompensation	6313000	USD
CY2019	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	-337000	USD
CY2018	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	12000	USD
CY2017	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	-45000	USD
CY2019	us-gaap	Foreign Currency Transaction Gain Loss Realized ForeignCurrencyTransactionGainLossRealized	27000	USD
CY2018	us-gaap	Foreign Currency Transaction Gain Loss Realized ForeignCurrencyTransactionGainLossRealized	-55000	USD
CY2017	us-gaap	Foreign Currency Transaction Gain Loss Realized ForeignCurrencyTransactionGainLossRealized	59000	USD
CY2019	aaon	Interest Income Note Receivable InterestIncomeNoteReceivable	25000	USD
CY2018	aaon	Interest Income Note Receivable InterestIncomeNoteReceivable	27000	USD
CY2017	aaon	Interest Income Note Receivable InterestIncomeNoteReceivable	25000	USD
CY2019	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	6038000	USD
CY2018	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	2641000	USD
CY2017	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-749000	USD
CY2019	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	13412000	USD
CY2018	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	2832000	USD
CY2017	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	7516000	USD
CY2019	us-gaap	Increase Decrease In Income Taxes Receivable IncreaseDecreaseInIncomeTaxesReceivable	-5129000	USD
CY2018	us-gaap	Increase Decrease In Income Taxes Receivable IncreaseDecreaseInIncomeTaxesReceivable	4448000	USD
CY2017	us-gaap	Increase Decrease In Income Taxes Receivable IncreaseDecreaseInIncomeTaxesReceivable	-4591000	USD
CY2019	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	-2557000	USD
CY2018	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	5598000	USD
CY2017	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	23698000	USD
CY2019	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	329000	USD
CY2018	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	528000	USD
CY2017	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	-98000	USD
CY2019	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	280000	USD
CY2018	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	-1176000	USD
CY2017	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	3043000	USD
CY2019	us-gaap	Increase Decrease In Deferred Revenue IncreaseDecreaseInDeferredRevenue	425000	USD
CY2018	us-gaap	Increase Decrease In Deferred Revenue IncreaseDecreaseInDeferredRevenue	412000	USD
CY2017	us-gaap	Increase Decrease In Deferred Revenue IncreaseDecreaseInDeferredRevenue	258000	USD
CY2019	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	7124000	USD
CY2018	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	-1816000	USD
CY2017	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	6366000	USD
CY2019	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	97925000	USD
CY2018	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	54856000	USD
CY2017	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	57994000	USD
CY2019	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	37166000	USD
CY2018	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	37268000	USD
CY2017	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	41713000	USD
CY2019	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	0	USD
CY2018	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	6377000	USD
CY2017	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	0	USD
CY2019	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	69000	USD
CY2018	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	13000	USD
CY2017	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	10000	USD
CY2019	us-gaap	Payments To Acquire Other Investments PaymentsToAcquireOtherInvestments	6000000	USD
CY2018	us-gaap	Payments To Acquire Other Investments PaymentsToAcquireOtherInvestments	7200000	USD
CY2017	us-gaap	Payments To Acquire Other Investments PaymentsToAcquireOtherInvestments	5280000	USD
CY2019	us-gaap	Proceeds From Sale And Maturity Of Other Investments ProceedsFromSaleAndMaturityOfOtherInvestments	6000000	USD
CY2018	us-gaap	Proceeds From Sale And Maturity Of Other Investments ProceedsFromSaleAndMaturityOfOtherInvestments	10080000	USD
CY2017	us-gaap	Proceeds From Sale And Maturity Of Other Investments ProceedsFromSaleAndMaturityOfOtherInvestments	7912000	USD
CY2019	us-gaap	Payments To Acquire Held To Maturity Securities PaymentsToAcquireHeldToMaturitySecurities	0	USD
CY2018	us-gaap	Payments To Acquire Held To Maturity Securities PaymentsToAcquireHeldToMaturitySecurities	9001000	USD
CY2017	us-gaap	Payments To Acquire Held To Maturity Securities PaymentsToAcquireHeldToMaturitySecurities	13241000	USD
CY2019	us-gaap	Proceeds From Maturities Prepayments And Calls Of Held To Maturity Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities	0	USD
CY2018	us-gaap	Proceeds From Maturities Prepayments And Calls Of Held To Maturity Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities	14570000	USD
CY2017	us-gaap	Proceeds From Maturities Prepayments And Calls Of Held To Maturity Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities	19700000	USD
CY2019	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	0	USD
CY2018	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	495000	USD
CY2017	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	1500000	USD
CY2019	us-gaap	Proceeds From Collection Of Notes Receivable ProceedsFromCollectionOfNotesReceivable	51000	USD
CY2018	us-gaap	Proceeds From Collection Of Notes Receivable ProceedsFromCollectionOfNotesReceivable	53000	USD
CY2017	us-gaap	Proceeds From Collection Of Notes Receivable ProceedsFromCollectionOfNotesReceivable	60000	USD
CY2019	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-37046000	USD
CY2018	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-34635000	USD
CY2017	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-31052000	USD
CY2019	us-gaap	Proceeds From Debt Net Of Issuance Costs ProceedsFromDebtNetOfIssuanceCosts	6614000	USD
CY2018	us-gaap	Proceeds From Debt Net Of Issuance Costs ProceedsFromDebtNetOfIssuanceCosts	0	USD
CY2017	us-gaap	Proceeds From Debt Net Of Issuance Costs ProceedsFromDebtNetOfIssuanceCosts	0	USD
CY2019	aaon	Payments Of Financing Costs1 PaymentsOfFinancingCosts1	301000	USD
CY2018	aaon	Payments Of Financing Costs1 PaymentsOfFinancingCosts1	0	USD
CY2017	aaon	Payments Of Financing Costs1 PaymentsOfFinancingCosts1	0	USD
CY2019	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	12625000	USD
CY2018	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	4987000	USD
CY2017	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	2259000	USD
CY2019	us-gaap	Payments For Repurchase Of Equity PaymentsForRepurchaseOfEquity	19586000	USD
CY2018	us-gaap	Payments For Repurchase Of Equity PaymentsForRepurchaseOfEquity	26846000	USD
CY2017	us-gaap	Payments For Repurchase Of Equity PaymentsForRepurchaseOfEquity	16620000	USD
CY2019	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	1207000	USD
CY2018	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	1097000	USD
CY2017	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	1614000	USD
CY2019	us-gaap	Payments Of Dividends PaymentsOfDividends	16645000	USD
CY2018	us-gaap	Payments Of Dividends PaymentsOfDividends	16728000	USD
CY2017	us-gaap	Payments Of Dividends PaymentsOfDividends	13663000	USD
CY2019	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-18500000	USD
CY2018	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-39684000	USD
CY2017	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-29638000	USD
CY2019	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Excluding Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect	42379000	USD
CY2018	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Excluding Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect	-19463000	USD
CY2017	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Excluding Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect	-2696000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	1994000	USD
CY2017Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	21457000	USD
CY2016Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	24153000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	44373000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	1994000	USD
CY2017Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	21457000	USD
CY2018	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	433947000	USD
CY2017	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	405232000	USD
CY2018	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	330414000	USD
CY2017	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	281581000	USD
CY2018	us-gaap	Gross Profit GrossProfit	103533000	USD
CY2017	us-gaap	Gross Profit GrossProfit	123651000	USD
CY2018	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	48194000	USD
CY2017	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	49371000	USD
CY2018	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	12000	USD
CY2017	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	-45000	USD
CY2018	us-gaap	Operating Income Loss OperatingIncomeLoss	55351000	USD
CY2017	us-gaap	Operating Income Loss OperatingIncomeLoss	74235000	USD
CY2018	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	196000	USD
CY2017	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	298000	USD
CY2018	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-47000	USD
CY2017	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	91000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	55500000	USD
CY2017	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	74624000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	13171000	USD
CY2017	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	20794000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	42329000	USD
CY2017	us-gaap	Net Income Loss NetIncomeLoss	53830000	USD
CY2018	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.81
CY2017	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.02
CY2018	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.80
CY2017	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.01
CY2018	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.32
CY2017	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.26
CY2018	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	52284616	shares
CY2017	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	52572496	shares
CY2018	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	52667939	shares
CY2017	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	53078734	shares
CY2018Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	1994000	USD
CY2018Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	54078000	USD
CY2018Q4	us-gaap	Income Taxes Receivable IncomeTaxesReceivable	5901000	USD
CY2018Q4	us-gaap	Notes And Loans Receivable Net Current NotesAndLoansReceivableNetCurrent	27000	USD
CY2018Q4	us-gaap	Inventory Net InventoryNet	77612000	USD
CY2018Q4	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	1046000	USD
CY2018Q4	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	1046000	USD
CY2018Q4	us-gaap	Assets Current AssetsCurrent	140658000	USD
CY2018Q4	us-gaap	Land Land	3114000	USD
CY2018Q4	us-gaap	Buildings And Improvements Gross BuildingsAndImprovementsGross	97393000	USD
CY2018Q4	us-gaap	Machinery And Equipment Gross MachineryAndEquipmentGross	212779000	USD
CY2018Q4	us-gaap	Furniture And Fixtures Gross FurnitureAndFixturesGross	16597000	USD
CY2018Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	329883000	USD
CY2018Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	166880000	USD
CY2018Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	163003000	USD
CY2018Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	506000	USD
CY2018Q4	us-gaap	Goodwill Goodwill	3229000	USD
CY2018Q4	us-gaap	Notes And Loans Receivable Net Noncurrent NotesAndLoansReceivableNetNoncurrent	598000	USD
CY2018Q4	us-gaap	Assets Assets	307994000	USD
CY2018Q4	us-gaap	Lines Of Credit Current LinesOfCreditCurrent	0	USD
CY2018Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	10616000	USD
CY2018Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	36875000	USD
CY2018Q4	us-gaap	Liabilities Current LiabilitiesCurrent	47491000	USD
CY2018Q4	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	9259000	USD
CY2018Q4	us-gaap	Other Accrued Liabilities Noncurrent OtherAccruedLiabilitiesNoncurrent	1801000	USD
CY2018Q4	us-gaap	Other Accrued Liabilities Noncurrent OtherAccruedLiabilitiesNoncurrent	1801000	USD
CY2018Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2018Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.001
CY2018Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	5000000	shares
CY2018Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2018Q4	us-gaap	Preferred Stock Value PreferredStockValue	0	USD
CY2018Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.004
CY2017Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.004
CY2017Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	100000000	shares
CY2018Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	100000000	shares
CY2018Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	51991242	shares
CY2018Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	51991242	shares
CY2017Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	52422801	shares
CY2017Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	52422801	shares
CY2018Q4	us-gaap	Common Stock Value CommonStockValue	208000	USD
CY2018Q4	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	0	USD
CY2018Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	249235000	USD
CY2018Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	249443000	USD
CY2018Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	307994000	USD
CY2017Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	238925000	USD
CY2017Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	238925000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	42329000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	42329000	USD
CY2018	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	4987000	USD
CY2018	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	4987000	USD
CY2018	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	7862000	USD
CY2018	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	7862000	USD
CY2018	us-gaap	Stock Repurchased And Retired During Period Value StockRepurchasedAndRetiredDuringPeriodValue	27943000	USD
CY2018	us-gaap	Stock Repurchased And Retired During Period Value StockRepurchasedAndRetiredDuringPeriodValue	27943000	USD
CY2018	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	16717000	USD
CY2018	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	16717000	USD
CY2018Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	249443000	USD
CY2018Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	249443000	USD
CY2016Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	208410000	USD
CY2016Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	208410000	USD
CY2017	us-gaap	Net Income Loss NetIncomeLoss	53830000	USD
CY2017	us-gaap	Net Income Loss NetIncomeLoss	53830000	USD
CY2017	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	2259000	USD
CY2017	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	2259000	USD
CY2017	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	6313000	USD
CY2017	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	6313000	USD
CY2017	us-gaap	Stock Repurchased And Retired During Period Value StockRepurchasedAndRetiredDuringPeriodValue	18234000	USD
CY2017	us-gaap	Stock Repurchased And Retired During Period Value StockRepurchasedAndRetiredDuringPeriodValue	18234000	USD
CY2017	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	13653000	USD
CY2017	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	13653000	USD
CY2017Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	238925000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	42329000	USD
CY2017	us-gaap	Net Income Loss NetIncomeLoss	53830000	USD
CY2018	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	17655000	USD
CY2017	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	15007000	USD
CY2018	us-gaap	Investment Income Amortization Of Premium InvestmentIncomeAmortizationOfPremium	13000	USD
CY2017	us-gaap	Investment Income Amortization Of Premium InvestmentIncomeAmortizationOfPremium	47000	USD
CY2018	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	174000	USD
CY2017	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	179000	USD
CY2018	us-gaap	Inventory Write Down InventoryWriteDown	152000	USD
CY2017	us-gaap	Inventory Write Down InventoryWriteDown	264000	USD
CY2018	us-gaap	Share Based Compensation ShareBasedCompensation	7862000	USD
CY2017	us-gaap	Share Based Compensation ShareBasedCompensation	6313000	USD
CY2018	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	12000	USD
CY2017	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	-45000	USD
CY2018	us-gaap	Foreign Currency Transaction Gain Loss Realized ForeignCurrencyTransactionGainLossRealized	-55000	USD
CY2017	us-gaap	Foreign Currency Transaction Gain Loss Realized ForeignCurrencyTransactionGainLossRealized	59000	USD
CY2018	aaon	Interest Income Note Receivable InterestIncomeNoteReceivable	27000	USD
CY2017	aaon	Interest Income Note Receivable InterestIncomeNoteReceivable	25000	USD
CY2018	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	2641000	USD
CY2017	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-749000	USD
CY2018	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	2832000	USD
CY2017	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	7516000	USD
CY2018	us-gaap	Increase Decrease In Income Taxes Receivable IncreaseDecreaseInIncomeTaxesReceivable	4448000	USD
CY2017	us-gaap	Increase Decrease In Income Taxes Receivable IncreaseDecreaseInIncomeTaxesReceivable	-4591000	USD
CY2018	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	5598000	USD
CY2017	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	23698000	USD
CY2018	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	528000	USD
CY2017	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	-98000	USD
CY2018	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	-1176000	USD
CY2017	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	3043000	USD
CY2018	us-gaap	Increase Decrease In Deferred Revenue IncreaseDecreaseInDeferredRevenue	412000	USD
CY2017	us-gaap	Increase Decrease In Deferred Revenue IncreaseDecreaseInDeferredRevenue	258000	USD
CY2018	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	-1816000	USD
CY2017	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	6366000	USD
CY2018	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	54856000	USD
CY2017	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	57994000	USD
CY2018	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	37268000	USD
CY2017	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	41713000	USD
CY2018	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	6377000	USD
CY2017	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	0	USD
CY2018	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	13000	USD
CY2017	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	10000	USD
CY2018	us-gaap	Payments To Acquire Other Investments PaymentsToAcquireOtherInvestments	7200000	USD
CY2017	us-gaap	Payments To Acquire Other Investments PaymentsToAcquireOtherInvestments	5280000	USD
CY2018	us-gaap	Proceeds From Sale And Maturity Of Other Investments ProceedsFromSaleAndMaturityOfOtherInvestments	10080000	USD
CY2017	us-gaap	Proceeds From Sale And Maturity Of Other Investments ProceedsFromSaleAndMaturityOfOtherInvestments	7912000	USD
CY2018	us-gaap	Payments To Acquire Held To Maturity Securities PaymentsToAcquireHeldToMaturitySecurities	9001000	USD
CY2017	us-gaap	Payments To Acquire Held To Maturity Securities PaymentsToAcquireHeldToMaturitySecurities	13241000	USD
CY2018	us-gaap	Proceeds From Maturities Prepayments And Calls Of Held To Maturity Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities	14570000	USD
CY2017	us-gaap	Proceeds From Maturities Prepayments And Calls Of Held To Maturity Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities	19700000	USD
CY2018	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	495000	USD
CY2017	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	1500000	USD
CY2018	us-gaap	Proceeds From Collection Of Notes Receivable ProceedsFromCollectionOfNotesReceivable	53000	USD
CY2017	us-gaap	Proceeds From Collection Of Notes Receivable ProceedsFromCollectionOfNotesReceivable	60000	USD
CY2018	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-34635000	USD
CY2017	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-31052000	USD
CY2018	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	4987000	USD
CY2017	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	2259000	USD
CY2018	us-gaap	Payments For Repurchase Of Equity PaymentsForRepurchaseOfEquity	26846000	USD
CY2017	us-gaap	Payments For Repurchase Of Equity PaymentsForRepurchaseOfEquity	16620000	USD
CY2018	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	1097000	USD
CY2017	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	1614000	USD
CY2018	us-gaap	Payments Of Dividends PaymentsOfDividends	16728000	USD
CY2017	us-gaap	Payments Of Dividends PaymentsOfDividends	13663000	USD
CY2018	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-39684000	USD
CY2017	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-29638000	USD
CY2018	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Excluding Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect	-19463000	USD
CY2017	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Excluding Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect	-2696000	USD
CY2017Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	21457000	USD
CY2016Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	24153000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	1994000	USD
CY2017Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	21457000	USD
CY2019Q4	aaon	Number Of Veriable Interes Entities NumberOfVeriableInteresEntities	2	numberOfEntities
CY2019Q4	us-gaap	Certificates Of Deposit At Carrying Value CertificatesOfDepositAtCarryingValue	0	USD
CY2018Q4	us-gaap	Certificates Of Deposit At Carrying Value CertificatesOfDepositAtCarryingValue	0	USD
CY2018Q4	us-gaap	Held To Maturity Securities HeldToMaturitySecurities	0	USD
CY2019Q4	us-gaap	Held To Maturity Securities HeldToMaturitySecurities	0	USD
CY2019	us-gaap	Concentration Risk Credit Risk ConcentrationRiskCreditRisk	<div style="text-align:justify;"><span style="background-color:rgb(255,255,255, 0.0);color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-style:italic;font-weight:700;line-height:120%;">Concentration of Credit Risk</span></div><div><span><br/></span></div><div style="text-align:justify;"><span style="background-color:rgb(255,255,255, 0.0);color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%;">Our customers are concentrated primarily in the domestic commercial and industrial new construction and replacement markets. To date, our sales have been primarily to the domestic market, with foreign sales accounting for approximately 3%, 3% and 4% of revenues for the years ended December 31, 2019, 2018, and 2017, respectively. One customer, Texas AirSystems, accounted for approximately 10% of our sales during 2019, 2018 and 2017. No other customer accounted for more than 5% of our sales during 2019, 2018 and 2017. One customer, Texas AirSystems, accounted for approximately 10% of our accounts receivable balance at December 31, 2019. No other customer accounted for 5% or more of our accounts receivable balance at December 31, 2019 and 2018.</span></div>
CY2019	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	14800000	USD
CY2018	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	13500000	USD
CY2017	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	13000000.0	USD
CY2019	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	469333000	USD
CY2019	us-gaap	Advertising Expense AdvertisingExpense	800000	USD
CY2018	us-gaap	Advertising Expense AdvertisingExpense	800000	USD
CY2017	us-gaap	Advertising Expense AdvertisingExpense	1700000	USD
CY2019	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Award Vesting Rights Percentage SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage	0.20
CY2018	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	433947000	USD
CY2017	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	405232000	USD
CY2019	us-gaap	Sales Commissions And Fees SalesCommissionsAndFees	46100000	USD
CY2018	us-gaap	Sales Commissions And Fees SalesCommissionsAndFees	47800000	USD
CY2017	us-gaap	Sales Commissions And Fees SalesCommissionsAndFees	51800000	USD
CY2019	aaon	Extended Product Warranties Maximum Length ExtendedProductWarrantiesMaximumLength	P10Y
CY2019	us-gaap	Use Of Estimates UseOfEstimates	<div style="text-align:justify;"><span style="background-color:rgb(255,255,255, 0.0);color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-style:italic;font-weight:700;line-height:120%;">Use of Estimates</span></div><div><span><br/></span></div><div style="text-align:justify;"><span style="background-color:rgb(255,255,255, 0.0);color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%;">The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosures of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Because these estimates and assumptions require significant judgment, actual results could differ from those estimates and could have a significant impact on our results of operations, financial position and cash flows. We reevaluate our estimates and assumptions as needed, but at a minimum on a quarterly basis. The most significant estimates include, but are not limited to, the allowance for doubtful accounts, inventory reserves, </span></div>warranty accrual, workers compensation accrual, medical insurance accrual, share-based compensation and income taxes. Actual results could differ materially from those estimates.
CY2019	aaon	Revenuefrom Contractwith Customer Including Assessed Tax Numberof Units RevenuefromContractwithCustomerIncludingAssessedTaxNumberofUnits	26307000	unit
CY2018	aaon	Revenuefrom Contractwith Customer Including Assessed Tax Numberof Units RevenuefromContractwithCustomerIncludingAssessedTaxNumberofUnits	25152000	unit
CY2017	aaon	Revenuefrom Contractwith Customer Including Assessed Tax Numberof Units RevenuefromContractwithCustomerIncludingAssessedTaxNumberofUnits	23381000	unit
CY2018Q2	us-gaap	Business Combination Contingent Consideration Arrangements Change In Amount Of Contingent Consideration Liability1 BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1	400000	USD
CY2019Q1	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	1800000	USD
CY2019Q1	us-gaap	Operating Lease Liability OperatingLeaseLiability	1800000	USD
CY2019Q4	us-gaap	Accounts Receivable Gross Current AccountsReceivableGrossCurrent	67752000	USD
CY2018Q4	us-gaap	Accounts Receivable Gross Current AccountsReceivableGrossCurrent	54342000	USD
CY2019Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	353000	USD
CY2018Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	264000	USD
CY2019Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	67399000	USD
CY2018Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	54078000	USD
CY2018Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	264000	USD
CY2017Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	119000	USD
CY2016Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	90000	USD
CY2019	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	91000	USD
CY2018	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	174000	USD
CY2017	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	179000	USD
CY2019	us-gaap	Allowance For Doubtful Accounts Receivable Write Offs AllowanceForDoubtfulAccountsReceivableWriteOffs	2000	USD
CY2018	us-gaap	Allowance For Doubtful Accounts Receivable Write Offs AllowanceForDoubtfulAccountsReceivableWriteOffs	29000	USD
CY2017	us-gaap	Allowance For Doubtful Accounts Receivable Write Offs AllowanceForDoubtfulAccountsReceivableWriteOffs	150000	USD
CY2019Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	353000	USD
CY2018Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	264000	USD
CY2017Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	119000	USD
CY2019Q4	us-gaap	Inventory Raw Materials InventoryRawMaterials	68842000	USD
CY2018Q4	us-gaap	Inventory Raw Materials InventoryRawMaterials	67995000	USD
CY2019Q4	us-gaap	Inventory Work In Process InventoryWorkInProcess	1825000	USD
CY2018Q4	us-gaap	Inventory Work In Process InventoryWorkInProcess	4060000	USD
CY2019Q4	us-gaap	Inventory Finished Goods InventoryFinishedGoods	5578000	USD
CY2018Q4	us-gaap	Inventory Finished Goods InventoryFinishedGoods	6767000	USD
CY2019Q4	us-gaap	Inventory Gross InventoryGross	76245000	USD
CY2018Q4	us-gaap	Inventory Gross InventoryGross	78822000	USD
CY2019Q4	us-gaap	Inventory Valuation Reserves InventoryValuationReserves	2644000	USD
CY2018Q4	us-gaap	Inventory Valuation Reserves InventoryValuationReserves	1210000	USD
CY2019Q4	us-gaap	Inventory Net InventoryNet	73601000	USD
CY2018Q4	us-gaap	Inventory Net InventoryNet	77612000	USD
CY2018Q4	us-gaap	Inventory Valuation Reserves InventoryValuationReserves	1210000	USD
CY2017Q4	us-gaap	Inventory Valuation Reserves InventoryValuationReserves	1118000	USD
CY2016Q4	us-gaap	Inventory Valuation Reserves InventoryValuationReserves	1382000	USD
CY2019	aaon	Inventory Valuation Reserves Provision InventoryValuationReservesProvision	1454000	USD
CY2018	aaon	Inventory Valuation Reserves Provision InventoryValuationReservesProvision	152000	USD
CY2017	aaon	Inventory Valuation Reserves Provision InventoryValuationReservesProvision	102000	USD
CY2019	aaon	Inventory Valuation Reserves Write Offs InventoryValuationReservesWriteOffs	20000	USD
CY2018	aaon	Inventory Valuation Reserves Write Offs InventoryValuationReservesWriteOffs	60000	USD
CY2017	aaon	Inventory Valuation Reserves Write Offs InventoryValuationReservesWriteOffs	366000	USD
CY2017Q4	us-gaap	Inventory Valuation Reserves InventoryValuationReserves	1118000	USD
CY2019Q4	us-gaap	Inventory Valuation Reserves InventoryValuationReserves	2644000	USD
CY2018Q4	us-gaap	Inventory Valuation Reserves InventoryValuationReserves	1210000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	700000	USD
CY2018Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	700000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	428000	USD
CY2018Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	194000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	272000	USD
CY2018Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	506000	USD
CY2019	aaon	Product Warranty Accrual Maximum Length ProductWarrantyAccrualMaximumLength	P25Y
CY2019	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	234000	USD
CY2018	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	194000	USD
CY2017	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	0	USD
CY2010Q3	us-gaap	Notes And Loans Receivable Net Noncurrent NotesAndLoansReceivableNetNoncurrent	1100000	CAD
CY2010Q3	aaon	Notes Loansand Financing Receivable Term NotesLoansandFinancingReceivableTerm	P15Y
CY2010Q3	aaon	Notes Loansand Financing Receivable Interest Rate NotesLoansandFinancingReceivableInterestRate	0.040
CY2010Q3	aaon	Balloonpaymentonnotereceivable Balloonpaymentonnotereceivable	600000	CAD
CY2019	aaon	Note Receivable Payment Terms Balloon Payment Due Date NoteReceivablePaymentTermsBalloonPaymentDueDate	October 2025
CY2019	aaon	Financing Receivable Impairment Charge FinancingReceivableImpairmentCharge	0	USD
CY2018	aaon	Financing Receivable Impairment Charge FinancingReceivableImpairmentCharge	0	USD
CY2018Q4	us-gaap	Standard Product Warranty Accrual StandardProductWarrantyAccrual	11421000	USD
CY2017Q4	us-gaap	Standard Product Warranty Accrual StandardProductWarrantyAccrual	10483000	USD
CY2019	us-gaap	Interest Paid Net InterestPaidNet	0	USD
CY2018	us-gaap	Interest Paid Net InterestPaidNet	6000	USD
CY2017	us-gaap	Interest Paid Net InterestPaidNet	0	USD
CY2019	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	2172000	USD
CY2018	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	14979000	USD
CY2017	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	16951000	USD
CY2019	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	863000	USD
CY2018	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	481000	USD
CY2017	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	832000	USD
CY2019	aaon	Product Warranty Accrual Minimum Length ProductWarrantyAccrualMinimumLength	P18M
CY2019	us-gaap	Product Warranty Expense ProductWarrantyExpense	8047000	USD
CY2018	us-gaap	Product Warranty Expense ProductWarrantyExpense	8807000	USD
CY2017	us-gaap	Product Warranty Expense ProductWarrantyExpense	11233000	USD
CY2018Q4	us-gaap	Contract With Customer Liability Current ContractWithCustomerLiabilityCurrent	2367000	USD
CY2019Q4	aaon	Donations Current DonationsCurrent	354000	USD
CY2018Q4	us-gaap	Standard Product Warranty Accrual StandardProductWarrantyAccrual	11421000	USD
CY2017Q4	us-gaap	Standard Product Warranty Accrual StandardProductWarrantyAccrual	10483000	USD
CY2016Q4	us-gaap	Standard Product Warranty Accrual StandardProductWarrantyAccrual	7936000	USD
CY2019	us-gaap	Standard Product Warranty Accrual Payments StandardProductWarrantyAccrualPayments	6816000	USD
CY2018	us-gaap	Standard Product Warranty Accrual Payments StandardProductWarrantyAccrualPayments	7869000	USD
CY2017	us-gaap	Standard Product Warranty Accrual Payments StandardProductWarrantyAccrualPayments	8686000	USD
CY2019	us-gaap	Standard Product Warranty Accrual Warranties Issued StandardProductWarrantyAccrualWarrantiesIssued	8047000	USD
CY2018	us-gaap	Standard Product Warranty Accrual Warranties Issued StandardProductWarrantyAccrualWarrantiesIssued	9669000	USD
CY2017	us-gaap	Standard Product Warranty Accrual Warranties Issued StandardProductWarrantyAccrualWarrantiesIssued	11233000	USD
CY2019	us-gaap	Standard Product Warranty Accrual Period Increase Decrease StandardProductWarrantyAccrualPeriodIncreaseDecrease	0	USD
CY2018	us-gaap	Standard Product Warranty Accrual Period Increase Decrease StandardProductWarrantyAccrualPeriodIncreaseDecrease	-862000	USD
CY2017	us-gaap	Standard Product Warranty Accrual Period Increase Decrease StandardProductWarrantyAccrualPeriodIncreaseDecrease	0	USD
CY2019Q4	us-gaap	Standard Product Warranty Accrual StandardProductWarrantyAccrual	12652000	USD
CY2018Q4	us-gaap	Workers Compensation Liability Current WorkersCompensationLiabilityCurrent	567000	USD
CY2019Q4	us-gaap	Self Insurance Reserve Current SelfInsuranceReserveCurrent	707000	USD
CY2018Q4	us-gaap	Self Insurance Reserve Current SelfInsuranceReserveCurrent	1207000	USD
CY2019Q4	us-gaap	Contract With Customer Liability Current ContractWithCustomerLiabilityCurrent	4627000	USD
CY2019Q4	us-gaap	Product Warranty Accrual Classified Current ProductWarrantyAccrualClassifiedCurrent	12652000	USD
CY2018Q4	us-gaap	Product Warranty Accrual Classified Current ProductWarrantyAccrualClassifiedCurrent	11421000	USD
CY2019Q4	us-gaap	Accrued Sales Commission Current AccruedSalesCommissionCurrent	11538000	USD
CY2018Q4	us-gaap	Accrued Sales Commission Current AccruedSalesCommissionCurrent	11024000	USD
CY2019Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	5058000	USD
CY2018Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	4182000	USD
CY2019Q4	aaon	Accrued Profit Sharing Current AccruedProfitSharingCurrent	1721000	USD
CY2018Q4	aaon	Accrued Profit Sharing Current AccruedProfitSharingCurrent	1255000	USD
CY2019Q4	us-gaap	Workers Compensation Liability Current WorkersCompensationLiabilityCurrent	522000	USD
CY2018Q4	aaon	Donations Current DonationsCurrent	150000	USD
CY2019Q4	us-gaap	Accrued Employee Benefits Current AccruedEmployeeBenefitsCurrent	3804000	USD
CY2018Q4	us-gaap	Accrued Employee Benefits Current AccruedEmployeeBenefitsCurrent	3173000	USD
CY2019Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	3286000	USD
CY2018Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	1529000	USD
CY2019Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	44269000	USD
CY2018Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	36875000	USD
CY2019Q4	aaon	Actual Net Worth For Compliance ActualNetWorthForCompliance	290100000	USD
CY2019Q4	us-gaap	Minimum Net Worth Required For Compliance MinimumNetWorthRequiredForCompliance	175000000.0	USD
CY2019Q4	aaon	Ratio Of Total Liability To Net Worth RatioOfTotalLiabilityToNetWorth	0.3
CY2019Q4	aaon	Maximum Ratio Of Total Liability To Net Worth Required For Compliance MaximumRatioOfTotalLiabilityToNetWorthRequiredForCompliance	2
CY2018	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.21
CY2019	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	7282000	USD
CY2018	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	10530000	USD
CY2017	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	21543000	USD
CY2019	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	6038000	USD
CY2018	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	2641000	USD
CY2017	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-749000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	13320000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	13171000	USD
CY2017	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	20794000	USD
CY2019	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.21
CY2017	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.35
CY2019	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.05
CY2018	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.06
CY2017	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.05
CY2019	aaon	Effective Income Tax Rate Reconciliation Remeasurementof Deferred Taxes Percent EffectiveIncomeTaxRateReconciliationRemeasurementofDeferredTaxesPercent	0
CY2018	aaon	Effective Income Tax Rate Reconciliation Remeasurementof Deferred Taxes Percent EffectiveIncomeTaxRateReconciliationRemeasurementofDeferredTaxesPercent	0
CY2017	aaon	Effective Income Tax Rate Reconciliation Remeasurementof Deferred Taxes Percent EffectiveIncomeTaxRateReconciliationRemeasurementofDeferredTaxesPercent	-0.05
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Deductions Qualified Production Activities EffectiveIncomeTaxRateReconciliationDeductionsQualifiedProductionActivities	0
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Deductions Qualified Production Activities EffectiveIncomeTaxRateReconciliationDeductionsQualifiedProductionActivities	0
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Deductions Qualified Production Activities EffectiveIncomeTaxRateReconciliationDeductionsQualifiedProductionActivities	0.03
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	-0.03
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	-0.02
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	-0.03
CY2019	aaon	Effective Income Tax Rate Reconciliation Return To Provision EffectiveIncomeTaxRateReconciliationReturnToProvision	0.01
CY2018	aaon	Effective Income Tax Rate Reconciliation Return To Provision EffectiveIncomeTaxRateReconciliationReturnToProvision	0
CY2017	aaon	Effective Income Tax Rate Reconciliation Return To Provision EffectiveIncomeTaxRateReconciliationReturnToProvision	0
CY2019	aaon	Effective Income Tax Rate Reconciliation Amended Tax Return EffectiveIncomeTaxRateReconciliationAmendedTaxReturn	0.01
CY2018	aaon	Effective Income Tax Rate Reconciliation Amended Tax Return EffectiveIncomeTaxRateReconciliationAmendedTaxReturn	0
CY2017	aaon	Effective Income Tax Rate Reconciliation Amended Tax Return EffectiveIncomeTaxRateReconciliationAmendedTaxReturn	0
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	-0.01
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	-0.01
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	-0.01
CY2019	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.20
CY2018	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.24
CY2017	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.28
CY2019Q4	aaon	Doublingbonusdepreciationforfiveyearspercent Doublingbonusdepreciationforfiveyearspercent	1
CY2019Q4	us-gaap	Tax Cuts And Jobs Act Of2017 Change In Tax Rate Income Tax Expense Benefit TaxCutsAndJobsActOf2017ChangeInTaxRateIncomeTaxExpenseBenefit	-3700000	USD
CY2019Q4	aaon	Tax Cutsand Jobs Actof2017 Changein Tax Rate Bonus Depreciation TaxCutsandJobsActof2017ChangeinTaxRateBonusDepreciation	3200000	USD
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Deductions EffectiveIncomeTaxRateReconciliationDeductions	0.030
CY2019Q4	aaon	Executivecompensationlimitation Executivecompensationlimitation	1000000.0	USD
CY2018	aaon	Additional Income Tax Expense Benefit AdditionalIncomeTaxExpenseBenefit	-600000	USD
CY2019Q4	aaon	Percent Of Eligible Investments For State And Local Tax Credit PercentOfEligibleInvestmentsForStateAndLocalTaxCredit	0.01
CY2019Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	12517000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	10146000	USD
CY2019Q4	aaon	Valuationreservesnoncurrent Valuationreservesnoncurrent	835000	USD
CY2018Q4	aaon	Valuationreservesnoncurrent Valuationreservesnoncurrent	401000	USD
CY2019Q4	aaon	Warrantyaccrualnoncurrent Warrantyaccrualnoncurrent	3523000	USD
CY2018Q4	aaon	Warrantyaccrualnoncurrent Warrantyaccrualnoncurrent	3105000	USD
CY2019Q4	aaon	Otheraccrualsnoncurrent Otheraccrualsnoncurrent	1919000	USD
CY2018Q4	aaon	Otheraccrualsnoncurrent Otheraccrualsnoncurrent	2445000	USD
CY2019Q4	aaon	Deferred Tax Asset Share Based Compensation Noncurrent DeferredTaxAssetShareBasedCompensationNoncurrent	3906000	USD
CY2018Q4	aaon	Deferred Tax Asset Share Based Compensation Noncurrent DeferredTaxAssetShareBasedCompensationNoncurrent	3264000	USD
CY2019Q4	aaon	Deferred Tax Assets Donations Noncurrent DeferredTaxAssetsDonationsNoncurrent	194000	USD
CY2018Q4	aaon	Deferred Tax Assets Donations Noncurrent DeferredTaxAssetsDonationsNoncurrent	80000	USD
CY2019Q4	aaon	Deferred Tax Asset Other Net DeferredTaxAssetOtherNet	2140000	USD
CY2018Q4	aaon	Deferred Tax Asset Other Net DeferredTaxAssetOtherNet	851000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	27814000	USD
CY2018Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	19405000	USD
CY2019Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	27814000	USD
CY2018Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	19405000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	15297000	USD
CY2018Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	9259000	USD
CY2016Q2	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Authorized ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized	6400000	shares
CY2019Q4	us-gaap	Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Number Of Exercisable Options ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfExercisableOptions	538949	shares
CY2019	us-gaap	Sharebased Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Exercisable Options Weighted Average Remaining Contractual Term2 SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeExercisableOptionsWeightedAverageRemainingContractualTerm2	P5Y9M21D
CY2019Q4	us-gaap	Sharebased Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Exercisable Options Weighted Average Exercise Price1 SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeExercisableOptionsWeightedAverageExercisePrice1	25.58
CY2019Q4	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Intrinsic Value1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1	12842000	USD
CY2018Q4	us-gaap	Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Number Of Exercisable Options ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfExercisableOptions	515977	shares
CY2018	us-gaap	Sharebased Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Exercisable Options Weighted Average Remaining Contractual Term2 SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeExercisableOptionsWeightedAverageRemainingContractualTerm2	P5Y11M12D
CY2018Q4	us-gaap	Sharebased Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Exercisable Options Weighted Average Exercise Price1 SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeExercisableOptionsWeightedAverageExercisePrice1	21.88
CY2018Q4	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Intrinsic Value1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1	6811000	USD
CY2017Q4	us-gaap	Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Number Of Exercisable Options ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfExercisableOptions	557311	shares
CY2017	us-gaap	Sharebased Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Exercisable Options Weighted Average Remaining Contractual Term2 SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeExercisableOptionsWeightedAverageRemainingContractualTerm2	P5Y4M6D
CY2017Q4	us-gaap	Sharebased Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Exercisable Options Weighted Average Exercise Price1 SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeExercisableOptionsWeightedAverageExercisePrice1	16.82
CY2017Q4	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Intrinsic Value1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1	11080000	USD
CY2018Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	2445849	shares
CY2018Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	30.77
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod	1975820	shares
CY2019	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	41.50
CY2019	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	444389	shares
CY2019	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	28.40
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures And Expirations In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod	350233	shares
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures And Expirations In Period Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice	36.78
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	3627047	shares
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	36.32
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber	538949	shares
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice	25.58
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	8100000	USD
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	5400000	USD
CY2017	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	4500000	USD
CY2019	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	12600000	USD
CY2018	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	5000000.0	USD
CY2017	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	2300000	USD
CY2018Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Number ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber	292450	shares
CY2018Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue	28.54
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod	113018	shares
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	40.98
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod	122278	shares
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue	26.38
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeited In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod	15706	shares
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeitures Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue	34.71
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Number ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber	267484	shares
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue	34.42
CY2019	aaon	Share Based Compensation Arrangement By Share Based Payment Award Options Awarded In Period Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAwardedInPeriodFairValue	20442000	USD
CY2018	aaon	Share Based Compensation Arrangement By Share Based Payment Award Options Awarded In Period Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAwardedInPeriodFairValue	12932000	USD
CY2017	aaon	Share Based Compensation Arrangement By Share Based Payment Award Options Awarded In Period Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAwardedInPeriodFairValue	3699000	USD
CY2019	aaon	Share Based Compensation Arrangement By Share Based Payment Award Restriced Stock Awarded In Period Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardRestricedStockAwardedInPeriodFairValue	4631000	USD
CY2018	aaon	Share Based Compensation Arrangement By Share Based Payment Award Restriced Stock Awarded In Period Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardRestricedStockAwardedInPeriodFairValue	3609000	USD
CY2017	aaon	Share Based Compensation Arrangement By Share Based Payment Award Restriced Stock Awarded In Period Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardRestricedStockAwardedInPeriodFairValue	4217000	USD
CY2019	aaon	Share Based Compensation Arrangement By Share Based Payment Award Total Awarded In Period Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardTotalAwardedInPeriodFairValue	25073000	USD
CY2018	aaon	Share Based Compensation Arrangement By Share Based Payment Award Total Awarded In Period Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardTotalAwardedInPeriodFairValue	16541000	USD
CY2017	aaon	Share Based Compensation Arrangement By Share Based Payment Award Total Awarded In Period Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardTotalAwardedInPeriodFairValue	7916000	USD
CY2019	aaon	Allocated Share Based Compensation Expense Stock Options AllocatedShareBasedCompensationExpenseStockOptions	9145000	USD
CY2018	aaon	Allocated Share Based Compensation Expense Stock Options AllocatedShareBasedCompensationExpenseStockOptions	5344000	USD
CY2017	aaon	Allocated Share Based Compensation Expense Stock Options AllocatedShareBasedCompensationExpenseStockOptions	3095000	USD
CY2019	aaon	Allocated Share Based Compensation Expense Restricted Stock AllocatedShareBasedCompensationExpenseRestrictedStock	2654000	USD
CY2018	aaon	Allocated Share Based Compensation Expense Restricted Stock AllocatedShareBasedCompensationExpenseRestrictedStock	2518000	USD
CY2017	aaon	Allocated Share Based Compensation Expense Restricted Stock AllocatedShareBasedCompensationExpenseRestrictedStock	3218000	USD
CY2019	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	11799000	USD
CY2018	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	7862000	USD
CY2017	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	6313000	USD
CY2017	us-gaap	Defined Contribution Plan Administrative Expenses DefinedContributionPlanAdministrativeExpenses	0	USD
CY2018	us-gaap	Defined Contribution Plan Administrative Expenses DefinedContributionPlanAdministrativeExpenses	0	USD
CY2019	us-gaap	Treasury Stock Acquired Average Cost Per Share TreasuryStockAcquiredAverageCostPerShare	45.76
CY2018	us-gaap	Treasury Stock Shares Acquired TreasuryStockSharesAcquired	783776	shares
CY2019	aaon	Employee Service Share Based Compensation Tax Benefit From Compensation Expense Stock Options EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpenseStockOptions	1197000	USD
CY2018	aaon	Employee Service Share Based Compensation Tax Benefit From Compensation Expense Stock Options EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpenseStockOptions	980000	USD
CY2017	aaon	Employee Service Share Based Compensation Tax Benefit From Compensation Expense Stock Options EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpenseStockOptions	1413000	USD
CY2019	aaon	Employee Service Share Based Compensation Tax Benefit From Compensation Expense Restricted Stock EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpenseRestrictedStock	575000	USD
CY2018	aaon	Employee Service Share Based Compensation Tax Benefit From Compensation Expense Restricted Stock EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpenseRestrictedStock	353000	USD
CY2017	aaon	Employee Service Share Based Compensation Tax Benefit From Compensation Expense Restricted Stock EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpenseRestrictedStock	1051000	USD
CY2019	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	1772000	USD
CY2018	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	1333000	USD
CY2017	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	2464000	USD
CY2019	aaon	Definedcontributionemployeeautomaticcontributionpercentag Definedcontributionemployeeautomaticcontributionpercentag	0.06
CY2019	aaon	Definedcontributionemployeeautomaticcontributionpercentag Definedcontributionemployeeautomaticcontributionpercentag	0.06
CY2019	aaon	Definedcontributionemployeeautomaticcontributionpercentag Definedcontributionemployeeautomaticcontributionpercentag	0.06
CY2019	us-gaap	Defined Contribution Plan Administrative Expenses DefinedContributionPlanAdministrativeExpenses	0	USD
CY2019	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	7000000.0	USD
CY2018	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	8100000	USD
CY2017	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	6100000	USD
CY2019	aaon	Profit Sharing Percentof Pretax Profit Paidto Eligible Employeeson Quarterly Basis ProfitSharingPercentofPretaxProfitPaidtoEligibleEmployeesonQuarterlyBasis	0.10
CY2019	us-gaap	Labor And Related Expense LaborAndRelatedExpense	7400000	USD
CY2018	us-gaap	Labor And Related Expense LaborAndRelatedExpense	6200000	USD
CY2017	us-gaap	Labor And Related Expense LaborAndRelatedExpense	8400000	USD
CY2019	us-gaap	Treasury Stock Shares Acquired TreasuryStockSharesAcquired	454430	shares
CY2019	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	20793000	USD
CY2019	aaon	Defined Benefit Plan Medical Claim Payments DefinedBenefitPlanMedicalClaimPayments	5900000	USD
CY2018	aaon	Defined Benefit Plan Medical Claim Payments DefinedBenefitPlanMedicalClaimPayments	5900000	USD
CY2017	aaon	Defined Benefit Plan Medical Claim Payments DefinedBenefitPlanMedicalClaimPayments	4800000	USD
CY2019	aaon	Defined Benefit Plan Heath Saving Account Payments DefinedBenefitPlanHeathSavingAccountPayments	3300000	USD
CY2018	aaon	Defined Benefit Plan Heath Saving Account Payments DefinedBenefitPlanHeathSavingAccountPayments	2900000	USD
CY2017	aaon	Defined Benefit Plan Heath Saving Account Payments DefinedBenefitPlanHeathSavingAccountPayments	2500000	USD
CY2016Q2	us-gaap	Stock Repurchase Program Authorized Amount1 StockRepurchaseProgramAuthorizedAmount1	25000000	USD
CY2018Q2	us-gaap	Stock Repurchase Program Authorized Amount1 StockRepurchaseProgramAuthorizedAmount1	15000000	USD
CY2019Q1	us-gaap	Stock Repurchase Program Authorized Amount1 StockRepurchaseProgramAuthorizedAmount1	20000000	USD
CY2018	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	27943000	USD
CY2018	us-gaap	Treasury Stock Acquired Average Cost Per Share TreasuryStockAcquiredAverageCostPerShare	35.65
CY2017	us-gaap	Treasury Stock Shares Acquired TreasuryStockSharesAcquired	522134	shares
CY2017	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	18234000	USD
CY2017	us-gaap	Treasury Stock Acquired Average Cost Per Share TreasuryStockAcquiredAverageCostPerShare	34.92
	us-gaap	Treasury Stock Shares Acquired TreasuryStockSharesAcquired	13551234	shares
	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	209315000	USD
	us-gaap	Treasury Stock Acquired Average Cost Per Share TreasuryStockAcquiredAverageCostPerShare	15.45
CY2019	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	16600000	USD
CY2018	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	16700000	USD
CY2017	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	13700000	USD
CY2018	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	52284616	shares
CY2017	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	52572496	shares
CY2019Q4	aaon	Contractual Obligation Numberof Contracts ContractualObligationNumberofContracts	1	contract
CY2019Q4	us-gaap	Contractual Obligation ContractualObligation	2500000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	53711000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	42329000	USD
CY2017	us-gaap	Net Income Loss NetIncomeLoss	53830000	USD
CY2019	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	52079865	shares
CY2019	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	555550	shares
CY2018	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	383323	shares
CY2017	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	506238	shares
CY2019	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	52635415	shares
CY2018	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	52667939	shares
CY2017	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	53078734	shares
CY2019	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.03
CY2018	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.81
CY2017	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.02
CY2019	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.02
CY2018	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.80
CY2017	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.01
CY2019	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	1868087	shares
CY2018	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	1920313	shares
CY2017	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	785825	shares
CY2018Q4	us-gaap	Due To Related Parties Current And Noncurrent DueToRelatedPartiesCurrentAndNoncurrent	0	USD
CY2019Q4	us-gaap	Gross Profit GrossProfit	36381000	USD
CY2019	us-gaap	Revenue From Related Parties RevenueFromRelatedParties	886	USD
CY2018	us-gaap	Revenue From Related Parties RevenueFromRelatedParties	1442	USD
CY2017	us-gaap	Revenue From Related Parties RevenueFromRelatedParties	1579	USD
CY2019	us-gaap	Related Party Transaction Amounts Of Transaction RelatedPartyTransactionAmountsOfTransaction	332	USD
CY2018	us-gaap	Related Party Transaction Amounts Of Transaction RelatedPartyTransactionAmountsOfTransaction	342	USD
CY2017	us-gaap	Related Party Transaction Amounts Of Transaction RelatedPartyTransactionAmountsOfTransaction	432	USD
CY2019Q4	us-gaap	Due From Related Parties DueFromRelatedParties	22	USD
CY2018Q4	us-gaap	Due From Related Parties DueFromRelatedParties	79	USD
CY2019Q4	us-gaap	Due To Related Parties Current And Noncurrent DueToRelatedPartiesCurrentAndNoncurrent	2	USD
CY2019Q1	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	113822000	USD
CY2019Q1	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	113822000	USD
CY2019Q2	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	119437000	USD
CY2019Q2	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	119437000	USD
CY2019Q3	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	113500000	USD
CY2019Q3	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	113500000	USD
CY2019Q4	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	122574000	USD
CY2019Q1	us-gaap	Gross Profit GrossProfit	25430000	USD
CY2019Q1	us-gaap	Gross Profit GrossProfit	25430000	USD
CY2019Q2	us-gaap	Gross Profit GrossProfit	30204000	USD
CY2019Q2	us-gaap	Gross Profit GrossProfit	30204000	USD
CY2019Q3	us-gaap	Gross Profit GrossProfit	27410000	USD
CY2019Q3	us-gaap	Gross Profit GrossProfit	27410000	USD
CY2019Q1	us-gaap	Net Income Loss NetIncomeLoss	8757000	USD
CY2019Q1	us-gaap	Net Income Loss NetIncomeLoss	8757000	USD
CY2019Q2	us-gaap	Net Income Loss NetIncomeLoss	13391000	USD
CY2019Q2	us-gaap	Net Income Loss NetIncomeLoss	13391000	USD
CY2019Q3	us-gaap	Net Income Loss NetIncomeLoss	14290000	USD
CY2019Q3	us-gaap	Net Income Loss NetIncomeLoss	14290000	USD
CY2019Q4	us-gaap	Net Income Loss NetIncomeLoss	17273000	USD
CY2019Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.17
CY2019Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.17
CY2019Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.26
CY2019Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.26
CY2019Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.27
CY2019Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.27
CY2019Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.33
CY2019Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.17
CY2019Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.17
CY2019Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.26
CY2019Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.26
CY2019Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.26
CY2019Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.26
CY2019Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.33
CY2018Q1	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	99082000	USD
CY2018Q1	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	99082000	USD
CY2018Q2	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	109588000	USD
CY2018Q2	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	109588000	USD
CY2018Q3	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	112937000	USD
CY2018Q3	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	112937000	USD
CY2018Q4	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	112340000	USD
CY2018Q4	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	112340000	USD
CY2018Q1	us-gaap	Gross Profit GrossProfit	15196000	USD
CY2018Q1	us-gaap	Gross Profit GrossProfit	15196000	USD
CY2018Q2	us-gaap	Gross Profit GrossProfit	27661000	USD
CY2018Q2	us-gaap	Gross Profit GrossProfit	27661000	USD
CY2018Q3	us-gaap	Gross Profit GrossProfit	32830000	USD
CY2018Q3	us-gaap	Gross Profit GrossProfit	32830000	USD
CY2018Q4	us-gaap	Gross Profit GrossProfit	27846000	USD
CY2018Q4	us-gaap	Gross Profit GrossProfit	27846000	USD
CY2018Q1	us-gaap	Net Income Loss NetIncomeLoss	3154000	USD
CY2018Q1	us-gaap	Net Income Loss NetIncomeLoss	3154000	USD
CY2018Q2	us-gaap	Net Income Loss NetIncomeLoss	11697000	USD
CY2018Q2	us-gaap	Net Income Loss NetIncomeLoss	11697000	USD
CY2018Q3	us-gaap	Net Income Loss NetIncomeLoss	14514000	USD
CY2018Q3	us-gaap	Net Income Loss NetIncomeLoss	14514000	USD
CY2018Q4	us-gaap	Net Income Loss NetIncomeLoss	12964000	USD
CY2018Q4	us-gaap	Net Income Loss NetIncomeLoss	12964000	USD
CY2018Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.06
CY2018Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.06
CY2018Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.22
CY2018Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.22
CY2018Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.28
CY2018Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.28
CY2018Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.25
CY2018Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.25
CY2018Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.06
CY2018Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.06
CY2018Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.22
CY2018Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.22
CY2018Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.27
CY2018Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.27
CY2018Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.25
CY2018Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.25
CY2019Q1	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	113822000	USD
CY2019Q1	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	113822000	USD
CY2018Q1	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	99082000	USD
CY2018Q1	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	99082000	USD
CY2019Q1	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	88392000	USD
CY2018Q1	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	83886000	USD
CY2019Q1	us-gaap	Gross Profit GrossProfit	25430000	USD
CY2019Q1	us-gaap	Gross Profit GrossProfit	25430000	USD
CY2018Q1	us-gaap	Gross Profit GrossProfit	15196000	USD
CY2018Q1	us-gaap	Gross Profit GrossProfit	15196000	USD
CY2019Q1	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	13677000	USD
CY2018Q1	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	11651000	USD
CY2019Q1	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	-284000	USD
CY2018Q1	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	7000	USD
CY2019Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	11469000	USD
CY2018Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	3552000	USD
CY2019Q1	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	9000	USD
CY2018Q1	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	68000	USD
CY2019Q1	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-26000	USD
CY2018Q1	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-6000	USD
CY2019Q1	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	11452000	USD
CY2018Q1	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	3614000	USD
CY2019Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	2695000	USD
CY2018Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	460000	USD
CY2019Q1	us-gaap	Net Income Loss NetIncomeLoss	8757000	USD
CY2019Q1	us-gaap	Net Income Loss NetIncomeLoss	8757000	USD
CY2018Q1	us-gaap	Net Income Loss NetIncomeLoss	3154000	USD
CY2018Q1	us-gaap	Net Income Loss NetIncomeLoss	3154000	USD
CY2019Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.17
CY2019Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.17
CY2018Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.06
CY2018Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.06
CY2019Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.17
CY2019Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.17
CY2018Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.06
CY2018Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.06
CY2019Q1	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	51992150	shares
CY2018Q1	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	52433902	shares
CY2019Q1	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	52369660	shares
CY2018Q1	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	52910223	shares
CY2019Q1	us-gaap	Assets Current AssetsCurrent	146511000	USD
CY2018Q1	us-gaap	Assets Current AssetsCurrent	154450000	USD
CY2019Q1	us-gaap	Assets Assets	319238000	USD
CY2018Q1	us-gaap	Assets Assets	306708000	USD
CY2019Q1	us-gaap	Liabilities Current LiabilitiesCurrent	43082000	USD
CY2018Q1	us-gaap	Liabilities Current LiabilitiesCurrent	56581000	USD
CY2019Q1	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	10168000	USD
CY2018Q1	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	6471000	USD
CY2019Q1	us-gaap	Other Accrued Liabilities Noncurrent OtherAccruedLiabilitiesNoncurrent	3442000	USD
CY2018Q1	us-gaap	Other Accrued Liabilities Noncurrent OtherAccruedLiabilitiesNoncurrent	1645000	USD
CY2019Q1	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	262546000	USD
CY2018Q1	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	242011000	USD
CY2019Q2	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	119437000	USD
CY2019Q2	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	119437000	USD
CY2018Q2	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	109588000	USD
CY2018Q2	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	109588000	USD
CY2019Q2	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	89233000	USD
CY2018Q2	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	81927000	USD
CY2019Q2	us-gaap	Gross Profit GrossProfit	30204000	USD
CY2019Q2	us-gaap	Gross Profit GrossProfit	30204000	USD
CY2018Q2	us-gaap	Gross Profit GrossProfit	27661000	USD
CY2018Q2	us-gaap	Gross Profit GrossProfit	27661000	USD
CY2019Q2	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	12912000	USD
CY2018Q2	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	13153000	USD
CY2019Q2	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	-6000	USD
CY2018Q2	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	4000	USD
CY2019Q2	us-gaap	Operating Income Loss OperatingIncomeLoss	17286000	USD
CY2018Q2	us-gaap	Operating Income Loss OperatingIncomeLoss	14512000	USD
CY2019Q2	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	31000	USD
CY2018Q2	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	67000	USD
CY2019Q2	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	17000	USD
CY2018Q2	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	12000	USD
CY2019Q2	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	17334000	USD
CY2018Q2	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	14591000	USD
CY2019Q2	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	3943000	USD
CY2018Q2	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	2894000	USD
CY2019Q2	us-gaap	Net Income Loss NetIncomeLoss	13391000	USD
CY2019Q2	us-gaap	Net Income Loss NetIncomeLoss	13391000	USD
CY2018Q2	us-gaap	Net Income Loss NetIncomeLoss	11697000	USD
CY2018Q2	us-gaap	Net Income Loss NetIncomeLoss	11697000	USD
CY2019Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.26
CY2019Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.26
CY2018Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.22
CY2018Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.22
CY2019Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.26
CY2019Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.26
CY2018Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.22
CY2018Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.22
CY2019Q2	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.16
CY2018Q2	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.16
CY2019Q2	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	52120272	shares
CY2018Q2	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	52383842	shares
CY2019Q2	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	52474199	shares
CY2018Q2	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	52717787	shares
CY2019Q2	us-gaap	Assets Current AssetsCurrent	168360000	USD
CY2018Q2	us-gaap	Assets Current AssetsCurrent	154428000	USD
CY2019Q2	us-gaap	Assets Assets	341981000	USD
CY2018Q2	us-gaap	Assets Assets	320034000	USD
CY2019Q2	us-gaap	Liabilities Current LiabilitiesCurrent	58102000	USD
CY2018Q2	us-gaap	Liabilities Current LiabilitiesCurrent	70962000	USD
CY2019Q2	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	12577000	USD
CY2018Q2	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	6493000	USD
CY2019Q2	us-gaap	Other Accrued Liabilities Noncurrent OtherAccruedLiabilitiesNoncurrent	3791000	USD
CY2018Q2	us-gaap	Other Accrued Liabilities Noncurrent OtherAccruedLiabilitiesNoncurrent	1746000	USD
CY2019Q2	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	267511000	USD
CY2018Q2	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	240833000	USD
CY2019Q3	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	113500000	USD
CY2019Q3	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	113500000	USD
CY2018Q3	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	112937000	USD
CY2018Q3	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	112937000	USD
CY2019Q3	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	86090000	USD
CY2018Q3	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	80107000	USD
CY2019Q3	us-gaap	Gross Profit GrossProfit	27410000	USD
CY2019Q3	us-gaap	Gross Profit GrossProfit	27410000	USD
CY2018Q3	us-gaap	Gross Profit GrossProfit	32830000	USD
CY2018Q3	us-gaap	Gross Profit GrossProfit	32830000	USD
CY2019Q3	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	12374000	USD
CY2018Q3	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	12667000	USD
CY2019Q3	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	-6000	USD
CY2018Q3	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	-2000	USD
CY2019Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	15030000	USD
CY2018Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	20161000	USD
CY2019Q3	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	9000	USD
CY2018Q3	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	36000	USD
CY2019Q3	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-7000	USD
CY2018Q3	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	5000	USD
CY2019Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	15032000	USD
CY2018Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	20202000	USD
CY2019Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	742000	USD
CY2018Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	5688000	USD
CY2019Q3	us-gaap	Net Income Loss NetIncomeLoss	14290000	USD
CY2019Q3	us-gaap	Net Income Loss NetIncomeLoss	14290000	USD
CY2018Q3	us-gaap	Net Income Loss NetIncomeLoss	14514000	USD
CY2018Q3	us-gaap	Net Income Loss NetIncomeLoss	14514000	USD
CY2019Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.27
CY2019Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.27
CY2018Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.28
CY2018Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.28
CY2019Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.26
CY2019Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.26
CY2018Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.27
CY2018Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.27
CY2019Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	52111444	shares
CY2018Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	52238796	shares
CY2019Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	52722127	shares
CY2018Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	52627541	shares
CY2019Q3	us-gaap	Assets Current AssetsCurrent	170284000	USD
CY2018Q3	us-gaap	Assets Current AssetsCurrent	144476000	USD
CY2019Q3	us-gaap	Assets Assets	351900000	USD
CY2018Q3	us-gaap	Assets Assets	313804000	USD
CY2019Q3	us-gaap	Liabilities Current LiabilitiesCurrent	53103000	USD
CY2018Q3	us-gaap	Liabilities Current LiabilitiesCurrent	53071000	USD
CY2019Q3	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	12873000	USD
CY2018Q3	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	7097000	USD
CY2019Q3	us-gaap	Other Accrued Liabilities Noncurrent OtherAccruedLiabilitiesNoncurrent	3669000	USD
CY2018Q3	us-gaap	Other Accrued Liabilities Noncurrent OtherAccruedLiabilitiesNoncurrent	1838000	USD
CY2019Q3	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	282255000	USD
CY2018Q3	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	251798000	USD
CY2018Q4	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	112340000	USD
CY2018Q4	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	112340000	USD
CY2018Q4	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	84494000	USD
CY2018Q4	us-gaap	Gross Profit GrossProfit	27846000	USD
CY2018Q4	us-gaap	Gross Profit GrossProfit	27846000	USD
CY2018Q4	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	10723000	USD
CY2018Q4	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	3000	USD
CY2018Q4	us-gaap	Operating Income Loss OperatingIncomeLoss	17126000	USD
CY2018Q4	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	25000	USD
CY2018Q4	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-58000	USD
CY2018Q4	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	17093000	USD
CY2018Q4	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	4129000	USD
CY2018Q4	us-gaap	Net Income Loss NetIncomeLoss	12964000	USD
CY2018Q4	us-gaap	Net Income Loss NetIncomeLoss	12964000	USD
CY2018Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.25
CY2018Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.25
CY2018Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.25
CY2018Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.25
CY2018Q4	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.16
CY2018Q4	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	52086247	shares
CY2018Q4	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	52420529	shares
CY2018Q4	us-gaap	Assets Current AssetsCurrent	140658000	USD
CY2018Q4	us-gaap	Assets Assets	307994000	USD
CY2018Q4	us-gaap	Liabilities Current LiabilitiesCurrent	47491000	USD
CY2018Q4	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	9259000	USD
CY2018Q4	us-gaap	Other Accrued Liabilities Noncurrent OtherAccruedLiabilitiesNoncurrent	1801000	USD
CY2018Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	249443000	USD
CY2019	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	469333000	USD
CY2018	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	433947000	USD
CY2017	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	405232000	USD
CY2019	us-gaap	Gross Profit GrossProfit	119425000	USD
CY2018	us-gaap	Gross Profit GrossProfit	103533000	USD
CY2017	us-gaap	Gross Profit GrossProfit	123651000	USD

Files In Submission

Name	View Source	Status
0000824142-20-000025-index-headers.html	Edgar Link	pending
0000824142-20-000025-index.html	Edgar Link	pending
0000824142-20-000025.txt	Edgar Link	pending
0000824142-20-000025-xbrl.zip	Edgar Link	pending
aaon-20191231.htm	Edgar Link	pending
aaon-20191231.xsd	Edgar Link	pending
aaon-20191231_cal.xml	Edgar Link	unprocessable
aaon-20191231_def.xml	Edgar Link	unprocessable
aaon-20191231_g1.jpg	Edgar Link	pending
aaon-20191231_htm.xml	Edgar Link	completed
aaon-20191231_lab.xml	Edgar Link	unprocessable
aaon-20191231_pre.xml	Edgar Link	unprocessable
aaon10k123119ex23.htm	Edgar Link	pending
aaon10k123119ex311.htm	Edgar Link	pending
aaon10k123119ex312.htm	Edgar Link	pending
aaon10k123119ex321.htm	Edgar Link	pending
aaon10k123119ex322.htm	Edgar Link	pending
aaon10k123119ex416.htm	Edgar Link	pending
FilingSummary.xml	Edgar Link	unprocessable
Financial_Report.xlsx	Edgar Link	pending
MetaLinks.json	Edgar Link	pending
R1.htm	Edgar Link	pending
R10.htm	Edgar Link	pending
R11.htm	Edgar Link	pending
R12.htm	Edgar Link	pending
R13.htm	Edgar Link	pending
R14.htm	Edgar Link	pending
R15.htm	Edgar Link	pending
R16.htm	Edgar Link	pending
R17.htm	Edgar Link	pending
R18.htm	Edgar Link	pending
R19.htm	Edgar Link	pending
R2.htm	Edgar Link	pending
R20.htm	Edgar Link	pending
R21.htm	Edgar Link	pending
R22.htm	Edgar Link	pending
R23.htm	Edgar Link	pending
R24.htm	Edgar Link	pending
R25.htm	Edgar Link	pending
R26.htm	Edgar Link	pending
R27.htm	Edgar Link	pending
R28.htm	Edgar Link	pending
R29.htm	Edgar Link	pending
R3.htm	Edgar Link	pending
R30.htm	Edgar Link	pending
R31.htm	Edgar Link	pending
R32.htm	Edgar Link	pending
R33.htm	Edgar Link	pending
R34.htm	Edgar Link	pending
R35.htm	Edgar Link	pending
R36.htm	Edgar Link	pending
R37.htm	Edgar Link	pending
R38.htm	Edgar Link	pending
R39.htm	Edgar Link	pending
R4.htm	Edgar Link	pending
R40.htm	Edgar Link	pending
R41.htm	Edgar Link	pending
R42.htm	Edgar Link	pending
R43.htm	Edgar Link	pending
R44.htm	Edgar Link	pending
R45.htm	Edgar Link	pending
R46.htm	Edgar Link	pending
R47.htm	Edgar Link	pending
R48.htm	Edgar Link	pending
R49.htm	Edgar Link	pending
R5.htm	Edgar Link	pending
R50.htm	Edgar Link	pending
R51.htm	Edgar Link	pending
R52.htm	Edgar Link	pending
R53.htm	Edgar Link	pending
R54.htm	Edgar Link	pending
R55.htm	Edgar Link	pending
R56.htm	Edgar Link	pending
R57.htm	Edgar Link	pending
R58.htm	Edgar Link	pending
R59.htm	Edgar Link	pending
R6.htm	Edgar Link	pending
R60.htm	Edgar Link	pending
R61.htm	Edgar Link	pending
R62.htm	Edgar Link	pending
R63.htm	Edgar Link	pending
R64.htm	Edgar Link	pending
R65.htm	Edgar Link	pending
R66.htm	Edgar Link	pending
R67.htm	Edgar Link	pending
R68.htm	Edgar Link	pending
R69.htm	Edgar Link	pending
R7.htm	Edgar Link	pending
R70.htm	Edgar Link	pending
R71.htm	Edgar Link	pending
R72.htm	Edgar Link	pending
R73.htm	Edgar Link	pending
R74.htm	Edgar Link	pending
R75.htm	Edgar Link	pending
R76.htm	Edgar Link	pending
R77.htm	Edgar Link	pending
R78.htm	Edgar Link	pending
R79.htm	Edgar Link	pending
R8.htm	Edgar Link	pending
R80.htm	Edgar Link	pending
R81.htm	Edgar Link	pending
R82.htm	Edgar Link	pending
R83.htm	Edgar Link	pending
R84.htm	Edgar Link	pending
R85.htm	Edgar Link	pending
R86.htm	Edgar Link	pending
R87.htm	Edgar Link	pending
R88.htm	Edgar Link	pending
R89.htm	Edgar Link	pending
R9.htm	Edgar Link	pending
R90.htm	Edgar Link	pending
R91.htm	Edgar Link	pending
R92.htm	Edgar Link	pending
R93.htm	Edgar Link	pending
report.css	Edgar Link	pending
Show.js	Edgar Link	pending

Create your account

Find Stocks Worth Researching

Deeply Understand Businesses

Value Businesses Intelligently

$AAON
AAON, INC. Stock $aaon

2018 Q4 Form 10-K Financial Statement

#000082414220000025 Filed on February 27, 2020

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$AAON AAON, INC. Stock $aaon

2018 Q4 Form 10-K Financial Statement

#000082414220000025 Filed on February 27, 2020

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$AAON
AAON, INC. Stock $aaon