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10. Commitments (Details Narrative) (Lexington, USD $)
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Mar. 31, 2015
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Dec. 31, 2014
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Lexington
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| Prepaid rent |
$ 112,934us-gaap_PrepaidRent / us-gaap_StatementGeographicalAxis = xbio_LexingonMember |
$ 120,299us-gaap_PrepaidRent / us-gaap_StatementGeographicalAxis = xbio_LexingonMember |
| Prepaid rent noncurrent |
83,473us-gaap_PrepaidExpenseNoncurrent / us-gaap_StatementGeographicalAxis = xbio_LexingonMember |
90,838us-gaap_PrepaidExpenseNoncurrent / us-gaap_StatementGeographicalAxis = xbio_LexingonMember |
| Landlord's leasehold improvement liability, current |
69,075xbio_LandlordsLeaseholdImprovementLiabilityCurrent / us-gaap_StatementGeographicalAxis = xbio_LexingonMember |
73,117xbio_LandlordsLeaseholdImprovementLiabilityCurrent / us-gaap_StatementGeographicalAxis = xbio_LexingonMember |
| Landlord's leasehold improvement liability, noncurrent |
$ 52,153xbio_LandlordsLeaseholdImprovementLiabilityNoncurrent / us-gaap_StatementGeographicalAxis = xbio_LexingonMember |
$ 56,383xbio_LandlordsLeaseholdImprovementLiabilityNoncurrent / us-gaap_StatementGeographicalAxis = xbio_LexingonMember |
| X | ||||||||||
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- Definition
Sum of the carrying amounts as of the balance sheet date of amounts paid in advance for expenses which will be charged against earnings in periods after one year or beyond the operating cycle, if longer. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount of asset related to consideration paid in advance for rent that provides economic benefits within a future period of one year or the normal operating cycle, if longer. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Landlord's leasehold improvement liability, current No definition available.
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| X | ||||||||||
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- Definition
Landlord's leasehold improvement liability, noncurrent No definition available.
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