Note 20 - Retirement Plan (Details) (USD $) In Millions, unless otherwise specified	9 Months Ended		3 Months Ended		12 Months Ended
	May 31, 2012 Successor [Member] UNITED STATES	May 31, 2012 Successor [Member] CANADA	Aug. 19, 2011 Predecessor [Member] UNITED STATES	Aug. 19, 2011 Predecessor [Member] CANADA	May 31, 2014 UNITED STATES	May 31, 2013 UNITED STATES	May 31, 2014 CANADA	May 31, 2013 CANADA
Note 20 - Retirement Plan (Details) [Line Items]
Defined Contribution Plan, Employer Discretionary Contribution Amount	$ 1.0	$ 0.1	$ 0.4	$ 0.1	$ 1.9	$ 1.6	$ 0.1	$ 0.1