Note 11 - Other Assets (Tables)
|6 Months Ended|
Nov. 30, 2018
|Other Non-current Assets Disclosure [Abstract]|
|Schedule of Other Assets [Table Text Block]||
Other assets included the following as of November 30, 2018 and May 31, 2018, respectively:
Tabular disclosure of the carrying amounts of other assets. This disclosure includes other current assets and other noncurrent assets.
No definition available.