Employee Benefit Plans Narrative (Details) $ in Millions	3 Months Ended
	Sep. 30, 2016 USD ($) hour plan	Sep. 30, 2015 USD ($)
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Multiemployer plans, number of plans	2
Defined contribution plan, hours threshold for eligibility | hour	1,000
Defined contribution plan, employer matching contribution percent	50.00%
Defined contribution plan, employer matching contribution, percent of eligible income	6.00%
Defined contribution plan, employer matching contribution, annual vesting percent	20.00%
Defined contribution plan, vesting period	5 years
Defined contribution plan, automatic vesting age	65 years
Defined contribution plan, employee vesting percent	100.00%
Defined contribution plan, employer matching contribution | $	$ 0.5	$ 0.4
Minimum
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Investment horizon for long-term capital market assumptions	20 years
Maximum
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Investment horizon for long-term capital market assumptions	30 years
Multiemployer Plans, Defined Contribution
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Multiemployer plans, number of plans	10
Multiemployer Plans, Pension | Multiemployer Plans, Defined Benefit Pension Plans [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Multiemployer plans, number of plans	2
Multiemployer Plans, Pension | Multiemployer Plans, Defined Contribution Pension Plan [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Multiemployer plans, number of plans	1
Multiemployer Plans, Defined Contribution
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Multiemployer plans, number of plans	10