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Carrying Amounts and Fair Values of Company's Financial Instruments (Detail) (USD $) | Jun. 30, 2014 | Mar. 31, 2014
--- | --- | ---
Assets |  |
Assets, Fair Value Disclosure | $ 504,106 |
Liabilities |  |
Financial Liabilities Fair Value Disclosure | 2,521,451 | 2,354,624
Fair Value, Inputs, Level 1 |  |
Assets |  |
Assets, Fair Value Disclosure | 257,364 |
Liabilities |  |
Financial Liabilities Fair Value Disclosure | 0 | 0
Fair Value, Inputs, Level 2 |  |
Assets |  |
Assets, Fair Value Disclosure | 246,742 |
Liabilities |  |
Financial Liabilities Fair Value Disclosure | 0 | 0
Fair Value, Inputs, Level 3 |  |
Assets |  |
Assets, Fair Value Disclosure | 0 |
Liabilities |  |
Financial Liabilities Fair Value Disclosure | 2,521,451 | 2,354,624
Money Market Funds |  |
Assets |  |
Assets, Fair Value Disclosure | 96,424 |
Money Market Funds | Fair Value, Inputs, Level 1 |  |
Assets |  |
Assets, Fair Value Disclosure | 0 |
Money Market Funds | Fair Value, Inputs, Level 2 |  |
Assets |  |
Assets, Fair Value Disclosure | 96,424 |
Money Market Funds | Fair Value, Inputs, Level 3 |  |
Assets |  |
Assets, Fair Value Disclosure | 0 |
Equity Securities |  |
Assets |  |
Assets, Fair Value Disclosure | 257,364 |
Equity Securities | Fair Value, Inputs, Level 1 |  |
Assets |  |
Assets, Fair Value Disclosure | 257,364 |
Equity Securities | Fair Value, Inputs, Level 2 |  |
Assets |  |
Assets, Fair Value Disclosure | 0 |
Equity Securities | Fair Value, Inputs, Level 3 |  |
Assets |  |
Assets, Fair Value Disclosure | 0 |
Warranty Liability |  |
Liabilities |  |
Financial Liabilities Fair Value Disclosure | 2,384,629 | 2,354,624
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 | 2,384,629 | 2,354,624
Holdback Liability |  |
Liabilities |  |
Financial Liabilities Fair Value Disclosure | 136,822 |
Holdback Liability | Fair Value, Inputs, Level 1 |  |
Liabilities |  |
Financial Liabilities Fair Value Disclosure | 0 |
Holdback Liability | Fair Value, Inputs, Level 2 |  |
Liabilities |  |
Financial Liabilities Fair Value Disclosure | 0 |
Holdback Liability | Fair Value, Inputs, Level 3 |  |
Liabilities |  |
Financial Liabilities Fair Value Disclosure | 136,822 |
Mutual Funds |  |
Assets |  |
Assets, Fair Value Disclosure | 150,318 |
Mutual Funds | Fair Value, Inputs, Level 1 |  |
Assets |  |
Assets, Fair Value Disclosure | 0 |
Mutual Funds | Fair Value, Inputs, Level 2 |  |
Assets |  |
Assets, Fair Value Disclosure | 150,318 |
Mutual Funds | Fair Value, Inputs, Level 3 |  |
Assets |  |
Assets, Fair Value Disclosure | $ 0 |

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- Definition Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258 + Details
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- Definition 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. + References No definition available. + Details
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