Carrying Amounts and Fair Values of Company's Financial Instruments (Detail) - Warranty Liability - USD ($)	Sep. 30, 2016	Mar. 31, 2016
Liabilities
Financial Liabilities Fair Value Disclosure	$ 1,477,778	$ 2,811,111
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	$ 1,477,778	$ 2,811,111

Fair value of financial obligations, including, but not limited to, debt instruments, derivative liabilities, federal funds purchased and sold under agreements to repurchase, securities loaned or sold under agreements to repurchase, financial instruments sold not yet purchased, guarantees, line of credit, loans and notes payable, servicing liability, and trading liabilities.

No definition available.

Name:	us-gaap_FinancialLiabilitiesFairValueDisclosure
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant