Annual report pursuant to Section 13 and 15(d)

The Company - Additional Information (Detail)

v3.2.0.727
The Company - Additional Information (Detail) - shares
 12 Months Ended
Jan. 30, 2014
Jan. 23, 2014
Dec. 31, 2013
Dec. 31, 2012
Description Of Business [Line Items]        
Common stock, shares issued     130,575,516 130,520,137
Common stock, shares outstanding     119,887,322 119,831,943
Xenetic Uk [Member]        
Description Of Business [Line Items]        
Issuance of new shares in exchange     56  
Number of subsidiary shares exchanged for new shares     175  
Subsequent Event [Member]        
Description Of Business [Line Items]        
Issuance of new shares in exchange   56    
Common stock newly issued during the period   132,545,504    
Common stock, shares issued   136,045,504    
Common stock, shares outstanding   136,045,504    
Subsequent Event [Member] | Baxter Healthcare [Member]        
Description Of Business [Line Items]        
Common stock newly issued during the period 10,695,187      
Subsequent Event [Member] | Xenetic Uk [Member]        
Description Of Business [Line Items]        
Number of subsidiary shares exchanged for new shares   175    
Percentage of shares owned by former shareholders of the subsidiary   97.00%