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Note 7 - Commitments and Contingencies (Details Textual) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 6 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2014
Dec. 31, 2013
Jun. 30, 2014
May 15, 2012
May 19, 2014
sqft
Jan. 05, 2012
sqft
Jan. 04, 2012
sqft
Commitments and Contingencies Disclosure [Abstract]                  
Operating Leases, Rent Expense $ 245us-gaap_LeaseAndRentalExpense $ 244us-gaap_LeaseAndRentalExpense $ 497us-gaap_LeaseAndRentalExpense $ 490us-gaap_LeaseAndRentalExpense          
Capital Lease Obligations 200us-gaap_CapitalLeaseObligations 83us-gaap_CapitalLeaseObligations 200us-gaap_CapitalLeaseObligations 83us-gaap_CapitalLeaseObligations          
Vitamin Realty LLC [Member]                  
Commitments and Contingencies Disclosure [Abstract]                  
Operating Leases, Rent Expense 204us-gaap_LeaseAndRentalExpense
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= inbp_VitaminRealtyLlcMember
201us-gaap_LeaseAndRentalExpense
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= inbp_VitaminRealtyLlcMember
414us-gaap_LeaseAndRentalExpense
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= inbp_VitaminRealtyLlcMember
407us-gaap_LeaseAndRentalExpense
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= inbp_VitaminRealtyLlcMember
         
Capital Lease Obligations 861us-gaap_CapitalLeaseObligations
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= inbp_VitaminRealtyLlcMember
  861us-gaap_CapitalLeaseObligations
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= inbp_VitaminRealtyLlcMember
  902us-gaap_CapitalLeaseObligations
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= inbp_VitaminRealtyLlcMember
       
Environmental Issues [Member]                  
Commitments and Contingencies Disclosure [Abstract]                  
Loss Contingency, Estimate of Possible Loss           300us-gaap_LossContingencyEstimateOfPossibleLoss
/ us-gaap_LitigationStatusAxis
= inbp_EnvironmentalIssuesMember
     
Stock Purchase Agreement [Member]                  
Commitments and Contingencies Disclosure [Abstract]                  
Loss Contingency, Estimate of Possible Loss           600us-gaap_LossContingencyEstimateOfPossibleLoss
/ us-gaap_LitigationStatusAxis
= inbp_StockPurchaseAgreementMember
     
AgroLabs [Member]                  
Commitments and Contingencies Disclosure [Abstract]                  
Area of Real Estate Property             2,700us-gaap_AreaOfRealEstateProperty
/ dei_LegalEntityAxis
= inbp_AgrolabsMember
   
Payments for Rent     27us-gaap_PaymentsForRent
/ dei_LegalEntityAxis
= inbp_AgrolabsMember
           
Manhattan Drug Company [Member]                  
Commitments and Contingencies Disclosure [Abstract]                  
Area of Real Estate Property               76,161us-gaap_AreaOfRealEstateProperty
/ dei_LegalEntityAxis
= inbp_ManhattanDrugCompanyMember
74,898us-gaap_AreaOfRealEstateProperty
/ dei_LegalEntityAxis
= inbp_ManhattanDrugCompanyMember
Payments for Rent     $ 533us-gaap_PaymentsForRent
/ dei_LegalEntityAxis
= inbp_ManhattanDrugCompanyMember