Commitments and Contingencies (Details)	Feb. 28, 2017 lawsuit
Loss Contingencies [Line Items]
Number of lawsuits filed	2
Court of Chancery of the State of Delaware
Loss Contingencies [Line Items]
Number of lawsuits filed	8
State of Pennsylvania in the Court of Common Pleas of Cumberland County
Loss Contingencies [Line Items]
Number of lawsuits filed	1
Middle District of Pennsylvania
Loss Contingencies [Line Items]
Number of lawsuits filed	1