XML 77 R66.htm IDEA: XBRL DOCUMENT
v3.10.0.1

Stockholders' Equity (Details) - USD ($) |  |  |  | 1 Months Ended | 3 Months Ended | 9 Months Ended | 100 Months Ended | 143 Months Ended | 159 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
May 18, 2018 | Nov. 07, 2017 | May 16, 2017 | Oct. 31, 2018 | Sep. 30, 2018 | Sep. 30, 2017 | Sep. 30, 2018 | Sep. 30, 2017 | Sep. 30, 2018 | Sep. 30, 2018 | Sep. 30, 2018 | May 15, 2018 | Jun. 02, 2016 | May 24, 2016 | May 19, 2015
Schedule of Shareholders' Equity [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock repurchased during period (in shares) |  |  |  |  |  |  | 513,875 | 407,360 |  |  | 12,826,903 |  |  |  |
Aggregate price of shares repurchased since inception |  |  |  |  |  |  | $ 18,360,416 | $ 14,183,646 |  |  | $ 178,939,369 |  |  |  |
Average price of shares repurchased since inception (per share) |  |  |  |  |  |  | $ 35.73 | $ 34.82 |  |  | $ 13.95 |  |  |  |
Cash dividends declared per common share: |  |  |  |  | $ 0 | $ 0 | $ 0.16 | $ 0.13 |  |  |  |  |  |  |
Dividend Declared |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Shareholders' Equity [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash dividends declared per common share: | $ 0.16 | $ 0.13 | $ 0.13 |  |  |  |  |  |  |  |  |  |  |  |
2010 Stock Repurchase Program |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Shareholders' Equity [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock repurchase program amount authorized (in shares) |  |  |  |  |  |  |  |  |  |  |  |  | 2,000,000.0 |  | 5,700,000.0
Stock repurchase program, authorized amount |  |  |  |  |  |  |  |  |  |  |  | $ 15,000,000.0 | $ 25,000,000.0 | $ 25,000,000.0 |
Stock repurchased during period (in shares) |  |  |  |  |  |  | 116,289 | 8,676 | 3,959,784 |  |  |  |  |  |
Aggregate price of shares repurchased since inception |  |  |  |  |  |  | $ 3,839,766 | $ 283,654 | $ 65,071,881 |  |  |  |  |  |
Average price of shares repurchased since inception (per share) |  |  |  |  |  |  | $ 33.02 | $ 32.69 | $ 16.43 |  |  |  |  |  |
2010 Stock Repurchase Program | Subsequent Event |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Shareholders' Equity [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock repurchased during period (in shares) |  |  |  | 85,200 |  |  |  |  |  |  |  |  |  |  |
Aggregate price of shares repurchased since inception |  |  |  | $ 2,800,000 |  |  |  |  |  |  |  |  |  |  |
2005 401(k) Stock Repurchase Program |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Shareholders' Equity [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock repurchased during period (in shares) |  |  |  |  |  |  | 373,129 | 364,839 |  |  | 6,923,152 |  |  |  |
Aggregate price of shares repurchased since inception |  |  |  |  |  |  | $ 13,660,954 | $ 12,706,655 |  |  | $ 95,729,759 |  |  |  |
Average price of shares repurchased since inception (per share) |  |  |  |  |  |  | $ 36.61 | $ 34.83 |  |  | $ 13.83 |  |  |  |
2005 401(k) Stock Repurchase Program | Subsequent Event |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Shareholders' Equity [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock repurchased during period (in shares) |  |  |  | 30,618 |  |  |  |  |  |  |  |  |  |  |
Aggregate price of shares repurchased since inception |  |  |  | $ 1,000,000 |  |  |  |  |  |  |  |  |  |  |
2006 Director and Officer Repurchase Program |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Shareholders' Equity [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock repurchased during period (in shares) |  |  |  |  |  |  | 24,457 | 33,845 |  | 1,943,967 |  |  |  |  |
Aggregate price of shares repurchased since inception |  |  |  |  |  |  | $ 859,696 | $ 1,193,337 |  | $ 18,137,729 |  |  |  |  |
Average price of shares repurchased since inception (per share) |  |  |  |  |  |  | $ 35.15 | $ 35.26 |  | $ 9.33 |  |  |  |  |

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://fasb.org/us-gaap/role/ref/legacyRef -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 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 Total cost of shares repurchased divided by the total number of shares repurchased. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21463-112644 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -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 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(29)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + 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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21463-112644 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -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://fasb.org/us-gaap/role/ref/legacyRef -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_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
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: |