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Note 7 - Commitments and Contingencies (Details Textual) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 9 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Mar. 31, 2015
Mar. 31, 2014
Jun. 30, 2014
Jan. 05, 2012
sqft
Jan. 04, 2012
sqft
May 19, 2014
sqft
May 15, 2012
Operating Leases, Rent Expense $ 262us-gaap_LeaseAndRentalExpense $ 258us-gaap_LeaseAndRentalExpense $ 759us-gaap_LeaseAndRentalExpense $ 749us-gaap_LeaseAndRentalExpense          
Capital Lease Obligations 161us-gaap_CapitalLeaseObligations   161us-gaap_CapitalLeaseObligations   83us-gaap_CapitalLeaseObligations        
Manhattan Drug Company [Member]                  
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
           
AgroLabs [Member]                  
Area of Real Estate Property               2,700us-gaap_AreaOfRealEstateProperty
/ dei_LegalEntityAxis
= inbp_AgrolabsMember
 
Payments for Rent     27us-gaap_PaymentsForRent
/ dei_LegalEntityAxis
= inbp_AgrolabsMember
           
Vitamin Realty LLC [Member]                  
Operating Leases, Rent Expense 223us-gaap_LeaseAndRentalExpense
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= inbp_VitaminRealtyLlcMember
215us-gaap_LeaseAndRentalExpense
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= inbp_VitaminRealtyLlcMember
637us-gaap_LeaseAndRentalExpense
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= inbp_VitaminRealtyLlcMember
622us-gaap_LeaseAndRentalExpense
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= inbp_VitaminRealtyLlcMember
         
Capital Lease Obligations 947us-gaap_CapitalLeaseObligations
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= inbp_VitaminRealtyLlcMember
  947us-gaap_CapitalLeaseObligations
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= inbp_VitaminRealtyLlcMember
  902us-gaap_CapitalLeaseObligations
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= inbp_VitaminRealtyLlcMember
       
Stock Purchase Agreement [Member]                  
Loss Contingency, Estimate of Possible Loss                 600us-gaap_LossContingencyEstimateOfPossibleLoss
/ us-gaap_LitigationStatusAxis
= inbp_StockPurchaseAgreementMember
Environmental Issues [Member]                  
Loss Contingency, Estimate of Possible Loss                 $ 300us-gaap_LossContingencyEstimateOfPossibleLoss
/ us-gaap_LitigationStatusAxis
= inbp_EnvironmentalIssuesMember