Quarterly report pursuant to Section 13 or 15(d)

Stock options and warrants (Schedule of Stock-based Compensation) (Details)

v2.4.0.8
Stock options and warrants (Schedule of Stock-based Compensation) (Details) (USD $)
 3 Months Ended 9 Months Ended
Sep. 30, 2013
Sep. 30, 2012
Sep. 30, 2013
Sep. 30, 2012
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]        
Share-based compensation, operating expense $ 332,250 $ 254,938 $ 1,227,597 $ 676,359
Employees, Officers, and Directors [Member]
        
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]        
Share-based compensation, operating expense 332,150 224,187 1,226,304 613,276
Investor Relations Activities [Member]
        
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]        
Share-based compensation, operating expense          23,598
APPY1 Activities [Member]
        
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]        
Share-based compensation, operating expense 100 30,751 1,293 33,733
Animal Health Activities [Member]
        
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]        
Share-based compensation, operating expense          5,752
Selling, general and administrative expenses [Member]
        
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]        
Share-based compensation, operating expense 301,888 224,187 1,111,623 642,626
Research and development expenses [Member]
        
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]        
Share-based compensation, operating expense $ 30,362 $ 30,751 $ 115,974 $ 33,733