Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation - Additional Information (Details)

v3.20.2
Stock-Based Compensation - Additional Information (Details) - USD ($)
1 Months Ended 3 Months Ended 6 Months Ended
Sep. 05, 2019
Sep. 07, 2017
May 15, 2015
Sep. 24, 2018
Aug. 25, 2016
Oct. 22, 2013
Mar. 20, 2007
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2020
Jun. 30, 2019
Nov. 02, 2010
Share-based Compensation Arrangement by Share-based Payment Award                        
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Net of Forfeitures               0 0 0 0  
Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Stock Options               $ 498,000   $ 498,000    
Employees | General and Administrative Expense                        
Share-based Compensation Arrangement by Share-based Payment Award                        
Allocated Share-based Compensation Expense               40,000 $ 50,000 79,000 $ 106,000  
Employees | Research and Development Expense                        
Share-based Compensation Arrangement by Share-based Payment Award                        
Allocated Share-based Compensation Expense               15,000 32,000 31,000 110,000  
Consultants | General and Administrative Expense                        
Share-based Compensation Arrangement by Share-based Payment Award                        
Allocated Share-based Compensation Expense               27,000 9,000 53,000 19,000  
Consultants | Research and Development Expense                        
Share-based Compensation Arrangement by Share-based Payment Award                        
Allocated Share-based Compensation Expense               $ 4,000 $ 1,000 $ 6,000 $ 1,000  
2007 Stock Plan [Member]                        
Share-based Compensation Arrangement by Share-based Payment Award                        
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number             71,429 7,052   7,052    
2007 Stock Plan [Member] | Maximum [Member]                        
Share-based Compensation Arrangement by Share-based Payment Award                        
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross             7,143          
2010 Stock Plan [Member]                        
Share-based Compensation Arrangement by Share-based Payment Award                        
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number               2,465,310   2,465,310   85,714
2010 Stock Plan [Member] | Maximum [Member]                        
Share-based Compensation Arrangement by Share-based Payment Award                        
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross 4,000,000 500,000 228,572 1,000,000 400,000 171,429            
2010 Stock Plan [Member] | Minimum [Member]                        
Share-based Compensation Arrangement by Share-based Payment Award                        
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross 1,000,000 400,000 171,429 500,000 228,572 85,714