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Lines of Credit and Long Term Debt - Long Term Debt - Additional Information (Details) (USD $)
3 Months Ended 24 Months Ended
Mar. 31, 2015
Mar. 31, 2015
Dec. 31, 2014
Mar. 15, 2013
Debt Instrument [Line Items]        
Outstanding principal balance $ 9,726,000us-gaap_LongTermDebt $ 9,726,000us-gaap_LongTermDebt $ 10,369,000us-gaap_LongTermDebt  
Notes payable to banks | Trans Ova Genetics, LC | American State Bank        
Debt Instrument [Line Items]        
Outstanding principal balance 5,866,000us-gaap_LongTermDebt
/ dei_LegalEntityAxis
= xon_TransOvaGeneticsLcMember
/ us-gaap_LineOfCreditFacilityAxis
= xon_AmericanStateBankMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_NotesPayableToBanksMember
5,866,000us-gaap_LongTermDebt
/ dei_LegalEntityAxis
= xon_TransOvaGeneticsLcMember
/ us-gaap_LineOfCreditFacilityAxis
= xon_AmericanStateBankMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_NotesPayableToBanksMember
   
Periodic payment amount 39,000us-gaap_DebtInstrumentPeriodicPayment
/ dei_LegalEntityAxis
= xon_TransOvaGeneticsLcMember
/ us-gaap_LineOfCreditFacilityAxis
= xon_AmericanStateBankMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_NotesPayableToBanksMember
     
Interest rate 3.95%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ dei_LegalEntityAxis
= xon_TransOvaGeneticsLcMember
/ us-gaap_LineOfCreditFacilityAxis
= xon_AmericanStateBankMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_NotesPayableToBanksMember
3.95%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ dei_LegalEntityAxis
= xon_TransOvaGeneticsLcMember
/ us-gaap_LineOfCreditFacilityAxis
= xon_AmericanStateBankMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_NotesPayableToBanksMember
   
Notes payable        
Debt Instrument [Line Items]        
Outstanding principal balance 7,360,000us-gaap_LongTermDebt
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_NotesPayableOtherPayablesMember
7,360,000us-gaap_LongTermDebt
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_NotesPayableOtherPayablesMember
7,653,000us-gaap_LongTermDebt
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_NotesPayableOtherPayablesMember
 
Notes payable | Trans Ova Genetics, LC | Iowa Economic Development Authority        
Debt Instrument [Line Items]        
Outstanding principal balance 916,000us-gaap_LongTermDebt
/ dei_LegalEntityAxis
= xon_TransOvaGeneticsLcMember
/ us-gaap_LineOfCreditFacilityAxis
= xon_IowaEconomicDevelopmentAuthorityMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_NotesPayableOtherPayablesMember
916,000us-gaap_LongTermDebt
/ dei_LegalEntityAxis
= xon_TransOvaGeneticsLcMember
/ us-gaap_LineOfCreditFacilityAxis
= xon_IowaEconomicDevelopmentAuthorityMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_NotesPayableOtherPayablesMember
   
Periodic principal payment amount 183,000us-gaap_DebtInstrumentPeriodicPaymentPrincipal
/ dei_LegalEntityAxis
= xon_TransOvaGeneticsLcMember
/ us-gaap_LineOfCreditFacilityAxis
= xon_IowaEconomicDevelopmentAuthorityMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_NotesPayableOtherPayablesMember
     
Notes payable | Exemplar Genetics, LLC        
Debt Instrument [Line Items]        
Outstanding principal balance 578,000us-gaap_LongTermDebt
/ dei_LegalEntityAxis
= xon_ExemplarGeneticsLLCMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_NotesPayableOtherPayablesMember
578,000us-gaap_LongTermDebt
/ dei_LegalEntityAxis
= xon_ExemplarGeneticsLLCMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_NotesPayableOtherPayablesMember
   
Notes payable | Exemplar Genetics, LLC | Minimum        
Debt Instrument [Line Items]        
Periodic payment amount 1,000us-gaap_DebtInstrumentPeriodicPayment
/ dei_LegalEntityAxis
= xon_ExemplarGeneticsLLCMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_NotesPayableOtherPayablesMember
/ us-gaap_RangeAxis
= us-gaap_MinimumMember
     
Interest rate 0.00%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ dei_LegalEntityAxis
= xon_ExemplarGeneticsLLCMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_NotesPayableOtherPayablesMember
/ us-gaap_RangeAxis
= us-gaap_MinimumMember
0.00%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ dei_LegalEntityAxis
= xon_ExemplarGeneticsLLCMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_NotesPayableOtherPayablesMember
/ us-gaap_RangeAxis
= us-gaap_MinimumMember
   
Notes payable | Exemplar Genetics, LLC | Maximum        
Debt Instrument [Line Items]        
Periodic payment amount 4,000us-gaap_DebtInstrumentPeriodicPayment
/ dei_LegalEntityAxis
= xon_ExemplarGeneticsLLCMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_NotesPayableOtherPayablesMember
/ us-gaap_RangeAxis
= us-gaap_MaximumMember
     
Interest rate 3.00%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ dei_LegalEntityAxis
= xon_ExemplarGeneticsLLCMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_NotesPayableOtherPayablesMember
/ us-gaap_RangeAxis
= us-gaap_MaximumMember
3.00%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ dei_LegalEntityAxis
= xon_ExemplarGeneticsLLCMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_NotesPayableOtherPayablesMember
/ us-gaap_RangeAxis
= us-gaap_MaximumMember
   
Royalty-based financing        
Debt Instrument [Line Items]        
Outstanding principal balance 1,868,000us-gaap_LongTermDebt
/ us-gaap_LongtermDebtTypeAxis
= xon_RoyaltybasedFinancingMember
1,868,000us-gaap_LongTermDebt
/ us-gaap_LongtermDebtTypeAxis
= xon_RoyaltybasedFinancingMember
1,926,000us-gaap_LongTermDebt
/ us-gaap_LongtermDebtTypeAxis
= xon_RoyaltybasedFinancingMember
 
Royalty-based financing | AquaBounty Technologies, Inc. | Atlantic Canada Opportunities Agency        
Debt Instrument [Line Items]        
Outstanding principal balance 1,868,000us-gaap_LongTermDebt
/ dei_LegalEntityAxis
= xon_AquaBountyMember
/ us-gaap_LineOfCreditFacilityAxis
= xon_AtlanticCanadaOpportunitiesAgencyMember
/ us-gaap_LongtermDebtTypeAxis
= xon_RoyaltybasedFinancingMember
1,868,000us-gaap_LongTermDebt
/ dei_LegalEntityAxis
= xon_AquaBountyMember
/ us-gaap_LineOfCreditFacilityAxis
= xon_AtlanticCanadaOpportunitiesAgencyMember
/ us-gaap_LongtermDebtTypeAxis
= xon_RoyaltybasedFinancingMember
   
Amount available under financial grant for research and development 2,271,000xon_AmountAvailableUnderFinancialGrantForResearchAndDevelopment
/ dei_LegalEntityAxis
= xon_AquaBountyMember
/ us-gaap_LineOfCreditFacilityAxis
= xon_AtlanticCanadaOpportunitiesAgencyMember
/ us-gaap_LongtermDebtTypeAxis
= xon_RoyaltybasedFinancingMember
2,271,000xon_AmountAvailableUnderFinancialGrantForResearchAndDevelopment
/ dei_LegalEntityAxis
= xon_AquaBountyMember
/ us-gaap_LineOfCreditFacilityAxis
= xon_AtlanticCanadaOpportunitiesAgencyMember
/ us-gaap_LongtermDebtTypeAxis
= xon_RoyaltybasedFinancingMember
   
Period to claim funding from government award 5 years      
Royalty rate to be paid 10.00%xon_RateOfRoyaltyAgreedToBePaid
/ dei_LegalEntityAxis
= xon_AquaBountyMember
/ us-gaap_LineOfCreditFacilityAxis
= xon_AtlanticCanadaOpportunitiesAgencyMember
/ us-gaap_LongtermDebtTypeAxis
= xon_RoyaltybasedFinancingMember
     
Amount claimed under financial grant       1,952,000xon_AmountClaimedUnderFinancialGrant
/ dei_LegalEntityAxis
= xon_AquaBountyMember
/ us-gaap_LineOfCreditFacilityAxis
= xon_AtlanticCanadaOpportunitiesAgencyMember
/ us-gaap_LongtermDebtTypeAxis
= xon_RoyaltybasedFinancingMember
Long term debt       1,107,000us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesLongTermDebt
/ dei_LegalEntityAxis
= xon_AquaBountyMember
/ us-gaap_LineOfCreditFacilityAxis
= xon_AtlanticCanadaOpportunitiesAgencyMember
/ us-gaap_LongtermDebtTypeAxis
= xon_RoyaltybasedFinancingMember
Accreted difference between face value of amount drawn and acquisition date fair value       (845,000)xon_AccretedDifferenceBetweenFaceValueOfAmountDrawnAndAcquisitionDateFairValue
/ dei_LegalEntityAxis
= xon_AquaBountyMember
/ us-gaap_LineOfCreditFacilityAxis
= xon_AtlanticCanadaOpportunitiesAgencyMember
/ us-gaap_LongtermDebtTypeAxis
= xon_RoyaltybasedFinancingMember
Proceeds from issuance of debt   $ 811,000us-gaap_ProceedsFromIssuanceOfDebt
/ dei_LegalEntityAxis
= xon_AquaBountyMember
/ us-gaap_LineOfCreditFacilityAxis
= xon_AtlanticCanadaOpportunitiesAgencyMember
/ us-gaap_LongtermDebtTypeAxis
= xon_RoyaltybasedFinancingMember