(Gain) Los on Write Down and Disposal of Long-Lived Assets (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Mar. 31, 2018
Property, Plant and Equipment [Line Items]
Disposal Group, Not (Gain) loss on write down and disposal of long-lived assetsDiscontinued Operation, Loss (Gain) on Write-down	$ 511	$ 19
Gain (Loss) on Disposition of Property Plant Equipment, Excluding Oil and Gas Property and Timber Property	$ (500)
(Gain) loss on write down and disposal of long-lived assets			$ 0