XML 43 R30.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Inventories (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2017
Inventory Disclosure [Abstract] |
Inventories |
| December 31,
| 2017 |  | 2016
| (in thousands)
Raw materials | $ | 57,784 |  |  | $ | 43,438 |
Work in process | 5,957 |  |  | 2,279 |
Finished goods | 8,163 |  |  | 3,017 |
| 71,904 |  |  | 48,734 |
Less: Allowance for excess and obsolete inventories | (1,118 | ) |  | (1,382 | )
Total, net | $ | 70,786 |  |  | $ | 47,352 |
Inventories (Allowance) |
| Years Ending December 31,
| 2017 |  | 2016 |  | 2015
Allowance for excess and obsolete inventories: | (in thousands)
Balance, beginning of period | $ | 1,382 |  |  | $ | 757 |  |  | $ | 714 |
Provisions for excess and obsolete inventories | 102 |  |  | 625 |  |  | 178 |
Inventories written off | (366 | ) |  | — |  |  | (135 | )
Balance, end of period | $ | 1,118 |  |  | $ | 1,382 |  |  | $ | 757 |

X
- Definition Tabular disclosure of activity in the allowance for excess and obsolete inventory account. + References No definition available. + Details
Name: | aaon_ScheduleOfInventoryAllowanceTableTextBlock
Namespace Prefix: | aaon_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_InventoryDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the carrying amount as of the balance sheet date of merchandise, goods, commodities, or supplies held for future sale or to be used in manufacturing, servicing or production process. + References Reference 1: 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(6)(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 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(6)(a)) -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 210 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6361739&loc=d3e7789-107766 Reference 4: 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(6)(c)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_ScheduleOfInventoryCurrentTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration