Annual report pursuant to Section 13 and 15(d)

Reconciliation of Federal Statutory Income Tax (Detail)

v3.10.0.1
Reconciliation of Federal Statutory Income Tax (Detail)
5 Months Ended 12 Months Ended
May 31, 2018
May 31, 2018
Dec. 31, 2017
May 31, 2017
May 31, 2016
Schedule Of Income Taxes [Line Items]          
Income tax provision at statutory rate 21.00% 28.60% 35.00% 34.00% 34.00%
State income taxes net   0.00%   0.00% 0.00%
Rate Change   (34.80%)      
Loss on debt conversion         (0.80%)
Derivative gain/loss   1.00%   2.80% 0.90%
Non-deductible debt issuance costs   (0.20%)      
Non-deductible interest on conversion   (0.10%)      
Inducement charge   (2.00%)   (1.00%) (1.00%)
Other   (1.10%)      
Miscellaneous   (0.10%)   (0.10%) (0.50%)
Current year credits generated   4.40%      
Credit carry forward generated (recorded currently)   4.10%      
Valuation allowance   0.30%   (35.70%) (32.90%)
Total   0.00%   0.00% 0.00%