Commitments and Contingencies (Narrative) (Details) - USD ($)
$ in Millions
Nov. 30, 2017
May 31, 2017
|Commitments to purchase capital assets||$ 4.5||$ 7.4|
Amount of contractual obligation, including but not limited to, long-term debt, capital lease obligations, operating lease obligations, purchase obligations, and other commitments.
No definition available.