Commitments and Contingencies (Detail Textuals) $ in Thousands	1 Months Ended	3 Months Ended	9 Months Ended	12 Months Ended
	Sep. 30, 2012 PRPs	Mar. 31, 2017 USD ($)	Mar. 31, 2017 USD ($)	Jun. 30, 2016 USD ($)
Commitments And Contingencies [Line Items]
Number of potentially responsible parties | PRPs	140
Insurance settlement
Commitments And Contingencies [Line Items]
Contingent gain		$ 7,500
Current and long-term liabilities
Commitments And Contingencies [Line Items]
Accrual for environmental loss contingencies payments			$ 7,205	$ 7,024