CytoDyn Inc. Annual report pursuant to Section 13 and 15(d)

Annual report pursuant to Section 13 and 15(d)

Stock Options and Warrants - Additional Information (Detail)

Stock Options and Warrants - Additional Information (Detail) (USD $)	12 Months Ended					0 Months Ended	12 Months Ended		12 Months Ended	0 Months Ended	12 Months Ended		0 Months Ended	12 Months Ended			12 Months Ended
	May 31, 2014	May 31, 2013	May 31, 2014 Minimum	May 31, 2014 Maximum	May 31, 2014 Telecommunications services provided	Oct. 23, 2013 Private Equity Offering	May 31, 2014 Private Equity Offering	Oct. 23, 2013 Private Equity Offering	May 31, 2014 Private Equity Offering After amendment	Mar. 17, 2014 Stock Options Consultant	May 31, 2014 Stock Options Consultant	Mar. 17, 2014 Stock Options Consultant	Mar. 17, 2014 Stock Options Options vested within notice period Consultant	May 31, 2014 2012 Equity Incentive Plan	May 31, 2013 2012 Equity Incentive Plan	May 31, 2014 2012 Equity Incentive Plan Stock Options	May 31, 2014 2012 Equity Incentive Plan Stock Options Directors And Employees	May 31, 2014 2012 Equity Incentive Plan Stock Options Directors And Employees Minimum	May 31, 2014 2012 Equity Incentive Plan Stock Options Directors And Employees Maximum	May 31, 2014 2012 Equity Incentive Plan Stock Options Director	May 31, 2014 2012 Equity Incentive Plan Stock Options Employees	May 31, 2014 2012 Equity Incentive Plan Stock Options 2 Director
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares available for future issuance																3,000,000
Shares available for future stock-based grants																1,238,903
Stock options , shares granted	18,414,144	11,166,274									305,000						749,452
Stock options granted, exercise price	$ 0.74	$ 1.61									$ 0.75							$ 0.64	$ 1.09
Percentage of option awards vesting																				25.00%	33.33%
Stock options, vesting period																						1 year
Stock options, term																					5 years
Grant date fair value of options											$ 0.43							$ 0.40	$ 0.43
Stock options, expiration date											Sep. 04, 2018
Stock options, number of shares vested											50,000		15,000
Stock options, number of shares vested monthly after initial issuance											15,000
Consulting agreement term			6 months	18 months
Cumulative number of options to purchase shares vested at the date of consulting agreement was terminated												140,000
Stock options to purchase, number of shares forfeited										150,000
Stock warrants exercised	$ 50,000
Warrants exercise price per share	$ 1.00
Proceeds from exercise of warrants	50,000	201,000
Number of warrants issued					50,000
Exercisable warrants, exercise price					0.75		0.75	0.75	0.75
Exercisable warrants, expiry date					Nov. 01, 2016
Grant date fair value of warrants					$ 0.67				$ 1.03
Number of common stock warrants issued							11,153,850		4,940,092
Proceeds from units sold at private equity offering						14,500,000	14,500,000
Purchase Price of warrant							1.30
Number of common stock per unit							2	2
Warrant to purchase common share							1	1
Exercisable warrants, expire period							5 years		7 years
Compensation expense related to stock options and warrants		1,128,000												928,400	3,262,000
Grant date fair value of options														2,274,000	8,889,000
Grant date fair value of warrants vested														2,274,000	8,889,000
Unrecognized compensation costs														$ 752,000
Weighted average period over which unrecognized compensation costs is expected to be recognized														1 year 10 months 21 days