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Note E - Debt (Details) | 1 Months Ended | 6 Months Ended |  |  | 6 Months Ended |  | 6 Months Ended |  | 6 Months Ended |  | 6 Months Ended
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Dec. 31, 2010 USD ($) | Dec. 31, 2013 USD ($) | Dec. 16, 2010 USD ($) | Dec. 31, 2013 Natural Alternatives International Europe Sa [Member] Current Account Loans [Member] | Dec. 31, 2013 Natural Alternatives International Europe Sa [Member] Fixed Loans [Member] USD ($) | Dec. 31, 2013 Natural Alternatives International Europe Sa [Member] Fixed Loans [Member] CHF | Feb. 19, 2007 Natural Alternatives International Europe Sa [Member] Amended Line of Credit Facility [Member] USD ($) | Feb. 19, 2007 Natural Alternatives International Europe Sa [Member] Amended Line of Credit Facility [Member] CHF | Dec. 31, 2013 Natural Alternatives International Europe Sa [Member] | Sep. 22, 2006 Natural Alternatives International Europe Sa [Member] USD ($) | Sep. 22, 2006 Natural Alternatives International Europe Sa [Member] CHF | Dec. 31, 2013 London Interbank Offered Rate (LIBOR) [Member] | Dec. 31, 2013 Maximum [Member] | Dec. 31, 2013 Minimum [Member]
Note E - Debt (Details) [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity |  |  | $ 5,000,000 |  |  |  |  |  |  | $ 1,500,000 | 1,300,000 |  |  |
Line of Credit Facility, Commitment Fee Amount | 12,500 |  |  |  |  |  |  |  |  |  |  |  |  |
Net Income Required In Future For Income Covenant |  | 750,000 |  |  |  |  |  |  |  |  |  |  |  |
Ratio of Indebtedness to Net Capital |  |  |  |  |  |  |  |  |  |  |  |  | 1.25 | 1.0
Long-term Debt, Percentage Bearing Variable Interest, Amount |  | 100,000 |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Basis Spread on Variable Rate |  |  |  |  |  |  |  |  |  |  |  | 2.75% |  |
Debt Instrument Basis Spread On Elected Fixed Rate Borrowing |  |  |  |  |  |  |  |  |  |  |  | 2.50% |  |
Line Of Credit Facility Outstanding Daily Balance During Period |  | 0 |  |  |  |  |  |  |  |  |  |  |  |
LineOfCreditCovenantNumber Of Consecutive Days That Outstanding Balance Must Be Zero |  |  |  |  |  |  |  |  |  |  |  |  |  | 30 days
Minimum Prepayment Amount Under Line Of Credit |  | 100,000 |  |  |  |  |  |  |  |  |  |  |  |
Line Of Credit Facility Maximum Borrowing Capacity Annual Reduction (in Francs) |  |  |  |  |  |  |  |  |  | 180,000 | 160,000 |  |  |
Line Of Credit Facility Maximum Borrowing Capacity Annual Reduction |  |  |  |  |  |  |  |  |  | 180,000 | 160,000 |  |  |
Line Of Credit Facility Maximum Amount Outstanding After Reduction (in Francs) |  |  |  |  |  |  | 561,000 | 500,000 |  |  |  |  |  |
Line Of Credit Facility Maximum Amount Outstanding After Reduction |  |  |  |  |  |  | 561,000 | 500,000 |  |  |  |  |  |
Debt Instrument, Term |  |  |  |  |  |  |  |  | 24 years |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  |  |  | 5.00% |  |  |  |  |  |  |  |  |  |
Debt Prepayment Penalty Rate |  |  |  |  | 0.10% | 0.10% |  |  |  |  |  |  |  |
Debt Pre Payment Penalty (in Francs) |  |  |  |  | 1,123 | 1,000 |  |  |  |  |  |  |  |
Debt Pre Payment Penalty |  |  |  |  | 1,123 | 1,000 |  |  |  |  |  |  |  |
Line of Credit Facility, Current Borrowing Capacity |  | $ 5,600,000 |  |  |  |  |  |  |  |  |  |  |  |

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