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Note F - Income Taxes (Details Textual) - USD ($) | 12 Months Ended
--- | ---
Jun. 30, 2017 | Jun. 30, 2016
Federal, State and Local Income Tax Expense (Benefit), Gross, Continuing Operations | $ 2,200,000 | $ 3,600,000
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount | $ 0 | 193,000
Federal, State and Local Income Tax Expense Benefit, Continuing Operations |  | $ 3,400,000
Effective Income Tax Rate Reconciliation, Percent | 28.40% | 29.70%
Net Income (Loss) Attributable to Parent | $ 7,235,000 | $ 9,546,000
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent | 34.00% |
Natural Alternatives International Europe SA [Member] |  |
Net Income (Loss) Attributable to Parent | $ 3,100,000 |
Undistributed Earnings of Foreign Subsidiaries | 20,900,000 |
State and Local Jurisdiction [Member] |  |
Operating Loss Carryforwards | $ 4,100,000 |
State and Local Jurisdiction [Member] | Earliest Tax Year [Member] |  |
Open Tax Year | 2008 |
Domestic Tax Authority [Member] | Earliest Tax Year [Member] | Internal Revenue Service (IRS) [Member] |  |
Open Tax Year | 2014 |
Foreign Tax Authority [Member] | Natural Alternatives International Europe SA [Member] |  |
Effective Income Tax Rate Reconciliation, Percent | 17.50% |
Foreign Tax Authority [Member] | Earliest Tax Year [Member] | Swiss Federal Tax Administration (FTA) [Member] |  |
Open Tax Year | 2015 |

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- Definition Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32698-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(h)(2)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32687-109319 + Details
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