XML 79 R66.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Shareholders' Equity (Details) |  |  |  |  |  |  |  | 12 Months Ended | 91 Months Ended | 134 Months Ended | 150 Months Ended |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Nov. 09, 2016 $ / shares | May 24, 2016 USD ($) $ / shares | Oct. 29, 2015 $ / shares | May 19, 2015 $ / shares shares | Nov. 04, 2014 $ / shares | Jul. 16, 2014 | May 02, 2014 $ / shares | Dec. 31, 2017 USD ($) $ / shares shares | Dec. 31, 2016 USD ($) $ / shares shares | Dec. 31, 2015 USD ($) $ / shares shares | Dec. 31, 2017 USD ($) $ / shares shares | Dec. 31, 2017 USD ($) $ / shares shares | Dec. 31, 2017 USD ($) $ / shares shares | Jun. 02, 2016 USD ($) shares
Schedule of Shareholders' Equity [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock repurchased during period (in shares) | shares |  |  |  |  |  |  |  | 522,134 | 736,171 | 1,576,090 |  |  | 12,313,028 |
Aggregate price of shares repurchased since inception | $ |  |  |  |  |  |  |  | $ 18,234,163 | $ 20,139,954 | $ 37,142,974 |  |  | $ 160,578,953 |
Average price of shares repurchased since inception (per share) | $ / shares |  |  |  |  |  |  |  | $ 34.92 | $ 27.36 | $ 23.57 |  |  | $ 13.04 |
Dividends declared (per share) | $ / shares |  |  |  |  |  |  |  | $ 0.26 | $ 0.24 | $ 0.22 |  |  |  |
Stock split, conversion ratio |  |  |  |  |  | 1.5 |  |  |  |  |  |  |  |
Cash dividends paid | $ |  |  |  |  |  |  |  | $ 13,700,000 | $ 12,700,000 | $ 11,900,000 |  |  |  |
Regular Semi-Annual Dividend |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Shareholders' Equity [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Dividends declared (per share) | $ / shares | $ 0.13 | $ 0.13 | $ 0.13 | $ 0.11 | $ 0.11 |  | $ 0.11 |  |  |  |  |  |  |
2010 Stock Repurchase Program [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Shareholders' Equity [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock repurchase program amount authorized (in shares) | shares |  |  |  | 5,700,000.0 |  |  |  |  |  |  |  |  |  | 2,000,000.0
Stock repurchase program amount authorized, value | $ |  | $ 25,000,000 |  |  |  |  |  |  |  |  |  |  |  | $ 25,000,000
Stock repurchased during period (in shares) | shares |  |  |  |  |  |  |  | 8,676 | 165,598 | 1,037,590 | 3,843,495 |  |  |
Aggregate price of shares repurchased since inception | $ |  |  |  |  |  |  |  | $ 283,654 | $ 4,440,658 | $ 24,999,963 | $ 61,232,115 |  |  |
Average price of shares repurchased since inception (per share) | $ / shares |  |  |  |  |  |  |  | $ 32.69 | $ 26.82 | $ 24.09 | $ 15.93 |  |  |
2005 401(k) Stock Repurchase Program [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Shareholders' Equity [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock repurchased during period (in shares) | shares |  |  |  |  |  |  |  | 467,580 | 540,501 | 512,754 |  |  | 6,550,023 |
Aggregate price of shares repurchased since inception | $ |  |  |  |  |  |  |  | $ 16,336,084 | $ 14,875,850 | $ 11,557,598 |  |  | $ 82,068,805 |
Average price of shares repurchased since inception (per share) | $ / shares |  |  |  |  |  |  |  | $ 34.94 | $ 27.52 | $ 22.54 |  |  | $ 12.53 |
2006 Director and Officer Repurchase Program [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Shareholders' Equity [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock repurchased during period (in shares) | shares |  |  |  |  |  |  |  | 45,878 | 30,072 | 25,746 |  | 1,919,510 |  |
Aggregate price of shares repurchased since inception | $ |  |  |  |  |  |  |  | $ 1,614,425 | $ 823,446 | $ 585,413 |  | $ 17,278,033 |  |
Average price of shares repurchased since inception (per share) | $ / shares |  |  |  |  |  |  |  | $ 35.19 | $ 27.38 | $ 22.74 |  | $ 9.00 |  |

X
- Definition [Line Items] for Schedule of Shareholders' Equity [Table] + References No definition available. + Details
Name: | aaon_ScheduleOfShareholdersEquityLineItems
Namespace Prefix: | aaon_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Aggregate dividends declared during the period for each share of common stock outstanding. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 + Details
Name: | us-gaap_CommonStockDividendsPerShareDeclared
Namespace Prefix: | us-gaap_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of cash outflow in the form of ordinary dividends to common shareholders of the parent entity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3291-108585 + Details
Name: | us-gaap_PaymentsOfDividendsCommonStock
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of stock repurchase plan authorized. + References No definition available. + Details
Name: | us-gaap_StockRepurchaseProgramAuthorizedAmount1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The number of shares authorized to be repurchased by an entity's Board of Directors under a stock repurchase plan. + References No definition available. + Details
Name: | us-gaap_StockRepurchaseProgramNumberOfSharesAuthorizedToBeRepurchased
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition Ratio applied to the conversion of stock split, for example but not limited to, one share converted to two or two shares converted to one. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SAB TOPIC 4.C) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187143-122770 + Details
Name: | us-gaap_StockholdersEquityNoteStockSplitConversionRatio1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:pureItemType
Balance Type: | na
Period Type: | duration

X
- Definition Total cost of shares repurchased divided by the total number of shares repurchased. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6405813&loc=d3e23239-112655 + Details
Name: | us-gaap_TreasuryStockAcquiredAverageCostPerShare
Namespace Prefix: | us-gaap_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of shares that have been repurchased during the period and are being held in treasury. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(29)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=84159872&loc=d3e21463-112644 + Details
Name: | us-gaap_TreasuryStockSharesAcquired
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Equity impact of the cost of common and preferred stock that were repurchased during the period. Recorded using the cost method. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=84159872&loc=d3e21463-112644 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6405813&loc=d3e23239-112655 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 + Details
Name: | us-gaap_TreasuryStockValueAcquiredCostMethod
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_DividendsAxis=us-gaap_DividendDeclaredMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ShareRepurchaseProgramAxis=aaon_A2010StockRepurchaseProgramMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ShareRepurchaseProgramAxis=aaon_A2005401kStockRepurchaseProgramMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ShareRepurchaseProgramAxis=aaon_A2006DirectorandOfficerRepurchaseProgramMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |