Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation (Details Textual)

v3.4.0.3
Stock-Based Compensation (Details Textual) - USD ($)
1 Months Ended 3 Months Ended 12 Months Ended
Mar. 20, 2007
Mar. 31, 2016
Mar. 31, 2015
Dec. 31, 2001
May. 15, 2015
Oct. 22, 2013
Nov. 02, 2010
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Stock Options   $ 7,300,000          
Employees And Consultants [Member] | General and Administrative Expenses and Research and Development Expense [Member]              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Allocated Share-based Compensation Expense   $ 1,100,000 $ 827,000        
Employee [Member]              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross   150,000 550,000        
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Fair Value   $ 153,000 $ 817,000        
2001 Stock Plan [Member]              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number   671,607          
2001 Stock Plan [Member] | Maximum [Member]              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross       250,000      
2007 Stock Plan [Member]              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number 2,500,000 379,155          
2007 Stock Plan [Member] | Maximum [Member]              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross 250,000            
2010 Stock Plan [Member]              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number   7,941,666         3,000,000
2010 Stock Plan [Member] | Maximum [Member]              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Common Stock, Capital Shares Reserved for Future Issuance         8,000,000 6,000,000  
2010 Stock Plan [Member] | Minimum [Member]              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Common Stock, Capital Shares Reserved for Future Issuance         6,000,000 3,000,000