General form of registration statement for all companies including face-amount certificate companies

Summary of Significant Accounting Policies - Debt Issuance Costs - Additional Information (Detail)

v3.3.1.900
Summary of Significant Accounting Policies - Debt Issuance Costs - Additional Information (Detail) - USD ($)
 3 Months Ended 6 Months Ended 12 Months Ended
Nov. 30, 2015
Nov. 30, 2015
May. 31, 2015
May. 31, 2014
Summary Of Significant Accounting Policies [Line Items]        
Direct costs associated with the convertible notes     $ 708,000 $ 120,000
Amortization of debt issuance costs $ 362,038 $ 712,377 $ 103,598 $ 120,000
Short-Term Convertible Notes        
Summary Of Significant Accounting Policies [Line Items]        
Amortization of debt issuance costs $ 350,000 $ 708,000