XML 19 R42.htm IDEA: XBRL DOCUMENT
v2.4.0.8

Note H - Segment Information (Details) - Assets and Capital Expenditures by Geographical Region (USD $) In Thousands, unless otherwise specified | 6 Months Ended |
--- | --- | ---
Dec. 31, 2013 | Dec. 31, 2012 | Jun. 30, 2013
Note H - Segment Information (Details) - Assets and Capital Expenditures by Geographical Region [Line Items] |  |  |
Long- Lived Assets | $ 9,298 |  | $ 9,205
Total Assets | 47,225 |  | 46,640
Capital Expenditures | 1,673 | 1,132 |
United States [Member] |  |  |
Note H - Segment Information (Details) - Assets and Capital Expenditures by Geographical Region [Line Items] |  |  |
Long- Lived Assets | 6,924 |  | 6,728
Total Assets | 32,998 |  | 32,450
Capital Expenditures | 1,433 | 417 |
Europe [Member] |  |  |
Note H - Segment Information (Details) - Assets and Capital Expenditures by Geographical Region [Line Items] |  |  |
Long- Lived Assets | 2,374 |  | 2,477
Total Assets | 14,227 |  | 14,190
Capital Expenditures | $ 240 | $ 715 |

X
- Details
Name: | naii_NoteHSegmentInformationDetailsAssetsandCapitalExpendituresbyGeographicalRegionLineItems
Namespace Prefix: | naii_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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
- Definition Long-lived assets other than financial instruments, long-term customer relationships of a financial institution, mortgage and other servicing rights, deferred policy acquisition costs, and deferred tax assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 41 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e9038-108599 + Details
Name: | us-gaap_NoncurrentAssets
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The cash outflow associated with the acquisition of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale; includes cash outflows to pay for construction of self-constructed assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Investing Activities -URI http://asc.fasb.org/extlink&oid=6516133 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3213-108585 + Details
Name: | us-gaap_PaymentsToAcquirePropertyPlantAndEquipment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration