Summary of Significant Accounting Policies - Average Useful Lives for Property (Detail)	12 Months Ended
	Mar. 31, 2015
Machinery and equipment | Minimum
Property Plant And Equipment [Line Items]
Useful lives of property	3 years
Machinery and equipment | Maximum
Property Plant And Equipment [Line Items]
Useful lives of property	10 years
Furniture and Fixtures | Minimum
Property Plant And Equipment [Line Items]
Useful lives of property	3 years
Furniture and Fixtures | Maximum
Property Plant And Equipment [Line Items]
Useful lives of property	10 years
Computer Hardware and Software | Minimum
Property Plant And Equipment [Line Items]
Useful lives of property	3 years
Computer Hardware and Software | Maximum
Property Plant And Equipment [Line Items]
Useful lives of property	5 years
Leasehold improvements
Property Plant And Equipment [Line Items]
Useful lives of property	10 years