Property Plant and Equipment - Additional Information (Detail) - USD ($)	12 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Property, Plant and Equipment [Line Items]
Depreciation expense	$ 75,000	$ 88,000
Property, plant and equipment disposed, gross book value	259,000	412,000
Gain (loss) from disposal of property, plant and equipment	$ (1,000)	$ 2,000