Commitments and Contingencies (Details)	May 31, 2016 Lawsuit
Loss Contingencies [Line Items]
Number of lawsuits filed	10
Court of Chancery of the State of Delaware [Member]
Loss Contingencies [Line Items]
Number of lawsuits filed	8
State of Pennsylvania in the Court of Common Pleas of Cumberland County [Member]
Loss Contingencies [Line Items]
Number of lawsuits filed	1
Middle District of Pennsylvania [Member]
Loss Contingencies [Line Items]
Number of lawsuits filed	1