XML 71 R59.htm IDEA: XBRL DOCUMENT
v3.5.0.2

Note M - Segment Information - Operating Results by Business Segment (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Jun. 30, 2016 | Jun. 30, 2015
Private Label Contract Manufacturing [Member] | Operating Segments [Member] |  |
Net Sales |  |
Income from Operations | $ 12,184 | $ 5,172
Private Label Contract Manufacturing [Member] |  |
Net Sales |  |
Revenue, Net | 92,420 | 69,670
Patent and Trademark Licensing [Member] | Operating Segments [Member] |  |
Net Sales |  |
Income from Operations | 6,153 | 3,811
Patent and Trademark Licensing [Member] |  |
Net Sales |  |
Revenue, Net | 21,781 | 9,140
Branded Products [Member] | Operating Segments [Member] |  |
Net Sales |  |
Income from Operations |  | 248
Branded Products [Member] |  |
Net Sales |  |
Revenue, Net |  | 698
Operating Segments [Member] |  |
Net Sales |  |
Income from Operations | 18,337 | 9,231
Corporate, Non-Segment [Member] |  |
Net Sales |  |
Income from Operations | (6,079) | (5,072)
Revenue, Net | 114,201 | 79,508
Income from Operations | $ 12,258 | $ 4,159

X
- Definition The net result for the period of deducting operating expenses from operating revenues. + References No definition available. + Details
Name: | us-gaap_OperatingIncomeLoss
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 + Details
Name: | us-gaap_SalesRevenueNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=naii_PrivateLabelContractManufacturingMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ConsolidationItemsAxis=us-gaap_OperatingSegmentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=naii_PatentAndTrademarkLicensingMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=naii_BrandedProductsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ConsolidationItemsAxis=us-gaap_CorporateNonSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |