XML 11 R39.htm IDEA: XBRL DOCUMENT v2.4.1.9

Note H - Segment Information - Assets by Business Segment (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Jun. 30, 2014
Total Assets
Assets	$ 54,099us-gaap_Assets	$ 52,258us-gaap_Assets
Private Label Contract Manufacturing [Member]
Total Assets
Assets	51,029us-gaap_Assets / us-gaap_StatementBusinessSegmentsAxis = naii_PrivateLabelContractManufacturingMember	50,424us-gaap_Assets / us-gaap_StatementBusinessSegmentsAxis = naii_PrivateLabelContractManufacturingMember
Patent and Trademark Licensing [Member]
Total Assets
Assets	3,070us-gaap_Assets / us-gaap_StatementBusinessSegmentsAxis = naii_PatentAndTrademarkLicensingMember	1,632us-gaap_Assets / us-gaap_StatementBusinessSegmentsAxis = naii_PatentAndTrademarkLicensingMember
Branded Products [Member]
Total Assets
Assets		$ 202us-gaap_Assets / us-gaap_StatementBusinessSegmentsAxis = naii_BrandedProductsMember

X

- Definition

Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

+ 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 210.5-02.18)

-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

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682



Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 12

-Article 7



Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 18

-Article 5

+ Details

Name:	us-gaap_Assets
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Details

Name:	us-gaap_ReconciliationFromSegmentTotalsToConsolidatedAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=naii_BrandedProductsMember
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_PrivateLabelContractManufacturingMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: