Carrying Amounts and Fair Values of Company's Financial Instruments (Detail) - USD ($)	Sep. 30, 2015	Mar. 31, 2015
Liabilities
Financial Liabilities Fair Value Disclosure	$ 1,703,996	$ 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	1,703,996	2,586,854
Warranty Liability
Liabilities
Financial Liabilities Fair Value Disclosure	1,315,846	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	1,315,846	2,144,496
Conversion Feature Liability
Liabilities
Financial Liabilities Fair Value Disclosure	388,150	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	$ 388,150	$ 442,358