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5. Property and Equipment, net (Details Narrative) (USD $)
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12 Months Ended | |
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Dec. 31, 2014
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Dec. 31, 2013
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| Property, Plant and Equipment [Line Items] | ||
| Depreciation expense | $ 83,863us-gaap_Depreciation | $ 52,032us-gaap_Depreciation |
| Laboratory Equipment [Member] | ||
| Property, Plant and Equipment [Line Items] | ||
| Equipment retired |
$ 885,000us-gaap_AssetsDisposedOfByMethodOtherThanSaleInPeriodOfDispositionGainLossOnDisposition1 / us-gaap_PropertyPlantAndEquipmentByTypeAxis = xbio_LaboratoryEquipmentMember |
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| X | ||||||||||
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- Definition
Amount of gain (loss) from the disposal of an asset through means other than sale, for example, but not limited to, abandonment, spin-off, and expropriation. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Details
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| X | ||||||||||
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- Details
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