Employee Benefit Plans - Multi-Employer Plan (Details)	3 Months Ended	12 Months Ended
	Sep. 30, 2016 USD ($) plan	Jun. 30, 2014 USD ($)	Jun. 30, 2016 USD ($)	Jan. 05, 2015 USD ($)	Nov. 18, 2014 USD ($)	Jun. 30, 2013 quarter	Jun. 30, 2012 USD ($)
Multiemployer Plans [Line Items]
Multiemployer plans, number of plans | plan	2
Labor Management Pension Fund
Multiemployer Plans [Line Items]
Withdrawal obligation | $	$ 3,700,000		$ 3,800,000	$ 4,900,000	$ 4,400,000		$ 4,300,000
Multiemployer plan, quarterly installments for withdrawal liability | $	$ 91,000	$ 100,000
Multiemployer plan, quarterly installments for withdrawal liability, number of quarters | quarter						80
Multiemployer Plans, Pension | Multiemployer Plans, Defined Benefit Pension Plans [Member]
Multiemployer Plans [Line Items]
Multiemployer plans, number of plans | plan	2