Summary of Significant Accounting Policies - Self Insurance (Details) - USD ($) $ in Millions	Dec. 31, 2015	Jun. 30, 2015
Accounting Policies [Abstract]
Workers' Compensation Liability	$ 13.3	$ 13.4
Estimated recovery from third party	2.2	2.5
Letters of credit outstanding, amount	7.0
Self Insurance Reserve, Medical Insurance	1.0	1.0
Liability for Unpaid Claims and Claims Adjustment Expense, Gross	$ 1.0	$ 0.8