Quarterly report pursuant to Section 13 or 15(d)

Commitments and Contingencies (Narrative) (Details)

v3.6.0.2
Commitments and Contingencies (Narrative) (Details) - USD ($)
$ in Millions
Nov. 30, 2016
May 31, 2016
Commitments and Contingencies [Abstract]    
Commitments to purchase capital assets $ 4.9 $ 6.8