Carrying Amounts and Fair Values of Company's Financial Instruments (Detail) - USD ($)	Jun. 30, 2015	Mar. 31, 2015
Liabilities
Financial Liabilities Fair Value Disclosure	$ 2,800,572	$ 2,586,854
Fair Value, Inputs, Level 1
Liabilities
Financial Liabilities Fair Value Disclosure	0	0
Fair Value, Inputs, Level 2
Liabilities
Financial Liabilities Fair Value Disclosure	0	0
Fair Value, Inputs, Level 3
Liabilities
Financial Liabilities Fair Value Disclosure	2,800,572	2,586,854
Warranty Liability
Liabilities
Financial Liabilities Fair Value Disclosure	2,308,620	2,144,496
Warranty Liability | Fair Value, Inputs, Level 1
Liabilities
Financial Liabilities Fair Value Disclosure	0	0
Warranty Liability | Fair Value, Inputs, Level 2
Liabilities
Financial Liabilities Fair Value Disclosure	0	0
Warranty Liability | Fair Value, Inputs, Level 3
Liabilities
Financial Liabilities Fair Value Disclosure	2,308,620	2,144,496
Conversion Feature Liability
Liabilities
Financial Liabilities Fair Value Disclosure	491,952	442,358
Conversion Feature Liability | Fair Value, Inputs, Level 1
Liabilities
Financial Liabilities Fair Value Disclosure	0	0
Conversion Feature Liability | Fair Value, Inputs, Level 2
Liabilities
Financial Liabilities Fair Value Disclosure	0	0
Conversion Feature Liability | Fair Value, Inputs, Level 3
Liabilities
Financial Liabilities Fair Value Disclosure	$ 491,952	$ 442,358