Quarterly report pursuant to Section 13 or 15(d)

9. Share-Based Compensation (Details Narrative)

v2.4.1.9
9. Share-Based Compensation (Details Narrative) (USD $)
3 Months Ended 12 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Dec. 31, 2014
Share based compensation $ 147,228us-gaap_ShareBasedCompensation $ 388,925us-gaap_ShareBasedCompensation  
Employee Stock Option [Member]      
Options granted 0us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
0us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
 
Options exercised 0us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
1,984,080us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
 
Proceeds from exercise of stock options   101,933us-gaap_EmployeeServiceShareBasedCompensationCashReceivedFromExerciseOfStockOptions
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
 
Share based compensation 63,634us-gaap_ShareBasedCompensation
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
13,073us-gaap_ShareBasedCompensation
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
 
Non Employee Stock Options [Member]      
Options granted 0us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod
/ us-gaap_AwardTypeAxis
= xbio_NonEmployeeStockOptionsMember
0us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod
/ us-gaap_AwardTypeAxis
= xbio_NonEmployeeStockOptionsMember
 
Options exercised 0us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised
/ us-gaap_AwardTypeAxis
= xbio_NonEmployeeStockOptionsMember
0us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised
/ us-gaap_AwardTypeAxis
= xbio_NonEmployeeStockOptionsMember
 
Share based compensation 4,438us-gaap_ShareBasedCompensation
/ us-gaap_AwardTypeAxis
= xbio_NonEmployeeStockOptionsMember
5,447us-gaap_ShareBasedCompensation
/ us-gaap_AwardTypeAxis
= xbio_NonEmployeeStockOptionsMember
 
Common Stock Awards [Member]      
Options granted 104,957us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod
/ us-gaap_AwardTypeAxis
= xbio_CommonStockAwardsMember
36,905us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod
/ us-gaap_AwardTypeAxis
= xbio_CommonStockAwardsMember
 
Share based compensation 25,500us-gaap_ShareBasedCompensation
/ us-gaap_AwardTypeAxis
= xbio_CommonStockAwardsMember
25,000us-gaap_ShareBasedCompensation
/ us-gaap_AwardTypeAxis
= xbio_CommonStockAwardsMember
 
Warrants [Member]      
Warrants issued, common shares available to purchase     10,425,000xbio_WarrantsIssuedCommonSharesAvailableToPurchase
/ us-gaap_AwardTypeAxis
= us-gaap_WarrantMember
Warrants [Member] | Non-employee Director      
Warrants issued, common shares available to purchase     1,600,000xbio_WarrantsIssuedCommonSharesAvailableToPurchase
/ us-gaap_AwardTypeAxis
= us-gaap_WarrantMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= xbio_NonEmployeeDirectorMember
JSOP [Member]      
Share based compensation $ 0us-gaap_ShareBasedCompensation
/ us-gaap_AwardTypeAxis
= xbio_JSOPMember
$ 344,905us-gaap_ShareBasedCompensation
/ us-gaap_AwardTypeAxis
= xbio_JSOPMember