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Quarterly report pursuant to Section 13 or 15(d)

Stockholders' Equity (Stock Options Narrative) (Details)

v3.7.0.1
Stockholders' Equity (Stock Options Narrative) (Details)
3 Months Ended 9 Months Ended
Jan. 09, 2017
Jan. 06, 2017
USD ($)
shares
Nov. 18, 2016
USD ($)
$ / shares
shares
Oct. 02, 2016
USD ($)
shares
Sep. 12, 2016
USD ($)
shares
Jun. 23, 2016
$ / shares
shares
Jun. 21, 2016
USD ($)
shares
May 19, 2016
$ / shares
shares
Jan. 31, 2017
USD ($)
shares
Jan. 31, 2016
USD ($)
Jan. 31, 2017
USD ($)
shares
Jun. 30, 2016
shares
Nov. 30, 2015
shares
Apr. 29, 2015
$ / shares
Sep. 30, 2014
shares
Jul. 31, 2014
shares
Mar. 13, 2012
shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                  
Price per share                           $ 1.86      
Unrecognized compensation cost | $                 $ 583,000   $ 583,000            
Weighted average recognition period                     2 years 8 months 12 days            
Share based compensation expense | $                 $ 253,833 $ 223,657              
Reverse stock split conversion ratio 12                                
Equity Incentive Plan [Member]                                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                  
Equity Incentive Plan, shares authorized | shares                       2,108,333 1,691,667   1,358,333 1,191,667 775,000
Equity Incentive Plan, shares remaining | shares                 144,853   144,853            
Pool of Employees [Member]                                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                  
Stock options issued during period | shares   69,583   20,417                          
Fair value of grants | $   $ 225,000   $ 17,000                          
Vesting period   3 years   3 years                          
Employee [Member]                                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                  
Stock options issued during period | shares             2,500                    
Fair value of grants | $             $ 5,000                    
Vesting period             3 years                    
Director [Member]                                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                  
Stock options issued during period | shares     41,667                            
Number of directors to whom stock option granted     2                            
Fair value of grants | $     $ 40,000                            
Option expiration period     5 years                            
Options granted, exercise price     $ 3.24                            
Vesting period     3 years                            
Chief Operating Officer [Member]                                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                  
Stock options issued during period | shares           166,667                      
Options granted, exercise price           $ 1.99                      
Vesting period           3 years                      
Weighted average grant-date fair value of stock options granted           $ 100,000                      
Chief Academic Officer [Member]                                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                  
Stock options issued during period | shares           58,333                      
Options granted, exercise price           $ 1.99                      
Vesting period           3 years                      
Weighted average grant-date fair value of stock options granted           $ 35,000                      
Chief Financial Officer [Member]                                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                  
Stock options issued during period | shares           25,000                      
Options granted, exercise price           $ 1.99                      
Vesting period           3 years                      
Weighted average grant-date fair value of stock options granted           $ 15,000                      
Chairman of Audit Committee [Member]                                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                  
Stock options issued during period | shares               4,167                  
Option expiration period               5 years                  
Options granted, exercise price               $ 1.92                  
Vesting period               3 years                  
Weighted average grant-date fair value of stock options granted               $ 10,000                  
Chairman of Compensation Committee [Member]                                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                  
Stock options issued during period | shares               4,167                  
Option expiration period               5 years                  
Options granted, exercise price               $ 1.92                  
Vesting period               3 years                  
Weighted average grant-date fair value of stock options granted               $ 10,000                  
Eight Non-Employee Directors [Member]                                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                  
Stock options issued during period | shares               12,500                  
Option expiration period               5 years                  
Options granted, exercise price               $ 1.92                  
Vesting period               3 years                  
Weighted average grant-date fair value of stock options granted               $ 7,500                  
Extended Options [Member]                                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                  
Stock options issued during period | shares         420,000                        
Option expiration period         3 years                        
Vesting period         3 years                        
Share based compensation expense | $         $ 150,000