Annual report pursuant to Section 13 and 15(d)

Stock Options and Warrants - Additional Information (Detail)

v2.4.0.8
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