XML 45 R33.htm IDEA: XBRL DOCUMENT
v3.3.1.900

Note E - Debt (Details Textual) |  | 6 Months Ended |  |  |
--- | --- | --- | --- | --- | ---
Feb. 01, 2016 USD ($) | Dec. 31, 2015 CHF (SFr) | Dec. 31, 2015 USD ($) | Jan. 31, 2016 USD ($) | Feb. 19, 2007 CHF (SFr) | Feb. 19, 2007 USD ($) | Sep. 22, 2006 CHF (SFr) | Sep. 22, 2006 USD ($)
Subsequent Event [Member] | Wells Fargo Bank, N.A. [Member] | Credit Agreement [Member] | Maximum [Member] |  |  |  |  |  |  |  |
Ratio of Indebtedness to Net Capital | 1.25 |  |  |  |  |  |  |
Ratio of Total Current Assets to Total Current Liabilities | 1.75 |  |  |  |  |  |  |
Subsequent Event [Member] | Wells Fargo Bank, N.A. [Member] | Credit Agreement [Member] | London Interbank Offered Rate (LIBOR) [Member] |  |  |  |  |  |  |  |
Debt Instrument, Basis Spread on Variable Rate | 1.25% |  |  |  |  |  |  |
Debt Instrument Basis Spread on Elected Fixed Rate Borrowing | 1.25% |  |  |  |  |  |  |
Subsequent Event [Member] | Wells Fargo Bank, N.A. [Member] | Credit Agreement [Member] |  |  |  |  |  |  |  |
Long-term Line of Credit | $ 0 |  |  |  |  |  |  |
Line of Credit Facility, Commitment Fee Amount | 0 |  |  |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity | 10,000,000 |  |  | $ 5,000,000 |  |  |  |
Long-term Debt, Percentage Bearing Fluctuating Interest, Threshold Amount | 100,000 |  |  |  |  |  |  |
Minimum Prepayment Amount Under Line of Credit | $ 100,000 |  |  |  |  |  |  |
Fixed Loans [Member] | Natural Alternatives International Europe SA [Member] | Line of Credit [Member] |  |  |  |  |  |  |  |
Debt Prepayment Penalty Rate |  | 0.10% | 0.10% |  |  |  |  |
Debt Pre Payment Penalty |  | SFr 1,000 | $ 1,009 |  |  |  |  |
Natural Alternatives International Europe SA [Member] | Maximum [Member] | Line of Credit [Member] |  |  |  |  |  |  |  |
Debt Instrument, Term |  | 2 years | 2 years |  |  |  |  |
Natural Alternatives International Europe SA [Member] | Line of Credit [Member] |  |  |  |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  |  | 5.00% |  |  |  |  |
Natural Alternatives International Europe SA [Member] |  |  |  |  |  |  |  |
Long-term Line of Credit |  |  | $ 0 |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity |  |  |  |  |  |  | SFr 1,300,000 | $ 1,300,000
Line of Credit Facility Maximum Borrowing Capacity Annual Reduction |  |  |  |  |  |  | SFr 160,000 | $ 161,000
Line of Credit Facility Maximum Amount Outstanding after Reduction |  |  |  |  | SFr 500,000 | $ 505,000 |  |
Long-term Debt |  |  | 0 |  |  |  |  |
Line of Credit Facility, Remaining Borrowing Capacity |  |  | $ 5,500,000 |  |  |  |  |

X
- Definition The percentage points added to the reference rate to compute fixed rate elections on the debt instrument. + References No definition available. + Details
Name: | naii_DebtInstrumentBasisSpreadOnElectedFixedRateBorrowing
Namespace Prefix: | naii_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Amount of penalties associated with the prepayment of debt. + References No definition available. + Details
Name: | naii_DebtPrePaymentPenalty
Namespace Prefix: | naii_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Percentage of penalties associated with the prepayment of debt. + References No definition available. + Details
Name: | naii_DebtPrepaymentPenaltyRate
Namespace Prefix: | naii_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Maximum amount outstanding after an annual reduction on a line of credit facility. + References No definition available. + Details
Name: | naii_LineOfCreditFacilityMaximumAmountOutstandingAfterReduction
Namespace Prefix: | naii_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of annual reduction on a line of credit facility. + References No definition available. + Details
Name: | naii_LineOfCreditFacilityMaximumBorrowingCapacityAnnualReduction
Namespace Prefix: | naii_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The portion of the carrying amount of long-term borrowings outstanding as of the balance sheet date, including current maturities, which accrues interest at a fluctuating rate when amount is less than threshold. + References No definition available. + Details
Name: | naii_LongTermDebtPercentageBearingFluctuatingInterestThresholdAmount
Namespace Prefix: | naii_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The minimum payment amount that may be prepaid on a line of credit facility with a fixed interest rate. + References No definition available. + Details
Name: | naii_MinimumPrepaymentAmountUnderLineOfCredit
Namespace Prefix: | naii_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Total current assets divided by total current liabilities. + References No definition available. + Details
Name: | naii_RatioOfTotalCurrentAssetsToTotalCurrentLiabilities
Namespace Prefix: | naii_
Data Type: | xbrli:pureItemType
Balance Type: | na
Period Type: | instant

X
- Definition Percentage points added to the reference rate to compute the variable rate on the debt instrument. + References No definition available. + Details
Name: | us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Contractual interest rate for funds borrowed, under the debt agreement. + 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 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
Name: | us-gaap_DebtInstrumentTerm
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.16) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.16) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 20, 22 -Article 5 + Details
Name: | us-gaap_LineOfCredit
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of the fee for available but unused credit capacity under the credit facility. + 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 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_LineOfCreditFacilityCommitmentFeeAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility. + 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 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding). + 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 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Carrying amount of long-term debt, net of unamortized discount or premium, including current and noncurrent amounts. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.16) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.16) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 20, 22 -Article 5 + Details
Name: | us-gaap_LongTermDebt
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Indebtedness divided by net capital. + References No definition available. + Details
Name: | us-gaap_RatioOfIndebtednessToNetCapital1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:pureItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LineOfCreditFacilityAxis=naii_WellsFargoBankNaMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=naii_CreditAgreementMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RangeAxis=us-gaap_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_VariableRateAxis=us-gaap_LondonInterbankOfferedRateLIBORMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=naii_FixedLoansMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=naii_NaturalAlternativesInternationalEuropeSaMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LongtermDebtTypeAxis=us-gaap_LineOfCreditMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |