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v2.4.1.9

Inventories (Allowance) (Details) (USD $) In Thousands, unless otherwise specified | 3 Months Ended
--- | ---
Mar. 31, 2015 | Mar. 31, 2014
Inventory Valuation Reserves [Roll Forward] |  |
Balance, beginning of period | $ 714 us-gaap_InventoryValuationReserves | $ 579 us-gaap_InventoryValuationReserves
Provisions for excess and obsolete inventories | 41 aaon_InventoryValuationReservesProvision | 4 aaon_InventoryValuationReservesProvision
Inventories written off | 0 aaon_InventoryValuationReservesWriteOffs | 0 aaon_InventoryValuationReservesWriteOffs
Balance, end of period | $ 755 us-gaap_InventoryValuationReserves | $ 583 us-gaap_InventoryValuationReserves

X
- Definition Charge to expense for inventory that is expected to be excess or obsolete. + References No definition available. + Details
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- Details
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Balance Type: | na
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- Definition Inventory that is written off due to being excess or obsolete. + References No definition available. + Details
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Balance Type: | credit
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- Definition Amount of valuation reserve for inventory. + 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(a)) -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 330 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB TOPIC 5.BB) -URI http://asc.fasb.org/extlink&oid=27011343&loc=d3e100047-122729 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SX 210.12-09) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24092-122690 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 330 -SubTopic 10 -Section 35 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=51655945&loc=d3e3927-108312 + Details
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Period Type: | instant