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Mergers and Acquisitions - Fair Value of Consideration Transferred (Details) (USD $) In Thousands, unless otherwise specified	0 Months Ended	1 Months Ended	0 Months Ended
	Aug. 08, 2014	Feb. 28, 2015	Mar. 06, 2014
Trans Ova Genetics, LC
Business Acquisition [Line Items]
Cash	$ 63,625us-gaap_PaymentsToAcquireBusinessesGross / us-gaap_BusinessAcquisitionAxis = xon_TransOvaGeneticsLcMember
Common shares	32,802us-gaap_BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable / us-gaap_BusinessAcquisitionAxis = xon_TransOvaGeneticsLcMember
Deferred cash consideration	20,115us-gaap_BusinessCombinationConsiderationTransferredLiabilitiesIncurred / us-gaap_BusinessAcquisitionAxis = xon_TransOvaGeneticsLcMember
Fair value of consideration transferred	116,542us-gaap_BusinessCombinationConsiderationTransferred1 / us-gaap_BusinessAcquisitionAxis = xon_TransOvaGeneticsLcMember
Fair value of noncontrolling interest	11,333us-gaap_BusinessCombinationAcquisitionOfLessThan100PercentNoncontrollingInterestFairValue / us-gaap_BusinessAcquisitionAxis = xon_TransOvaGeneticsLcMember
Business combination, consideration transferred and noncontrolling interest	127,875xon_BusinessCombinationConsiderationTransferredandNoncontrollingInterest / us-gaap_BusinessAcquisitionAxis = xon_TransOvaGeneticsLcMember
ActoGeniX NV
Business Acquisition [Line Items]
Cash		32,739us-gaap_PaymentsToAcquireBusinessesGross / us-gaap_BusinessAcquisitionAxis = xon_ActoGeniXNVMember
Common shares		39,735us-gaap_BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable / us-gaap_BusinessAcquisitionAxis = xon_ActoGeniXNVMember
Fair value of consideration transferred		72,474us-gaap_BusinessCombinationConsiderationTransferred1 / us-gaap_BusinessAcquisitionAxis = xon_ActoGeniXNVMember
Medistem, Inc.
Business Acquisition [Line Items]
Cash			4,920us-gaap_PaymentsToAcquireBusinessesGross / us-gaap_BusinessAcquisitionAxis = xon_MedistemIncMember
Common shares			19,368us-gaap_BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable / us-gaap_BusinessAcquisitionAxis = xon_MedistemIncMember
Fair value of consideration transferred			24,995us-gaap_BusinessCombinationConsiderationTransferred1 / us-gaap_BusinessAcquisitionAxis = xon_MedistemIncMember
Medistem, Inc. | Settlement of Promissory Notes
Business Acquisition [Line Items]
Fair value of consideration transferred			$ 707us-gaap_BusinessCombinationConsiderationTransferred1 / us-gaap_BusinessAcquisitionAxis = xon_MedistemIncMember / us-gaap_NoncashOrPartNoncashAcquisitionsByUniqueDescriptionAxis = xon_PromissoryNotesMember

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This element represents the fair value of the noncontrolling interest in the acquiree at the acquisition date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

-SubTopic 20

-Section 50

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Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

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Amount of equity interests of the acquirer, including instruments or interests issued or issuable in consideration for the business combination.

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Amount of liabilities incurred by the acquirer as part of consideration transferred in a business combination.

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The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

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Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interests issued by the acquirer combined with noncontrolling interest.

+ References

No definition available.

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