(Gain) Loss on Write-Down and Disposal of Long-Lived Assets Impairment Charges (Phantom) - USD ($)	12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2016
Property, Plant and Equipment [Line Items]
Asset Impairment Charges	$ 200,000	$ 10,279,000
Write down of long-lived assets			$ 0