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Carrying Amounts and Fair Values of Company's Financial Instruments (Detail) (USD $)
Sep. 30, 2014
Mar. 31, 2014
Assets    
Assets, Fair Value Disclosure $ 516,021  
Liabilities    
Financial Liabilities Fair Value Disclosure 3,435,086 2,354,624
Fair Value, Inputs, Level 1
    
Assets    
Assets, Fair Value Disclosure 273,187  
Liabilities    
Financial Liabilities Fair Value Disclosure 0 0
Fair Value, Inputs, Level 2
    
Assets    
Assets, Fair Value Disclosure 242,834  
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 3,435,086 2,354,624
Money Market Funds
    
Assets    
Assets, Fair Value Disclosure 93,840  
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 93,840  
Money Market Funds | Fair Value, Inputs, Level 3
    
Assets    
Assets, Fair Value Disclosure 0  
Equity Securities
    
Assets    
Assets, Fair Value Disclosure 273,187  
Equity Securities | Fair Value, Inputs, Level 1
    
Assets    
Assets, Fair Value Disclosure 273,187  
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 2,750,480 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 2,750,480 2,354,624
Holdback consideration
    
Liabilities    
Financial Liabilities Fair Value Disclosure 136,822  
Holdback consideration | Fair Value, Inputs, Level 1
    
Liabilities    
Financial Liabilities Fair Value Disclosure 0  
Holdback consideration | Fair Value, Inputs, Level 2
    
Liabilities    
Financial Liabilities Fair Value Disclosure 0  
Holdback consideration | Fair Value, Inputs, Level 3
    
Liabilities    
Financial Liabilities Fair Value Disclosure 136,822  
Mutual Funds
    
Assets    
Assets, Fair Value Disclosure 148,994  
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 148,994  
Mutual Funds | Fair Value, Inputs, Level 3
    
Assets    
Assets, Fair Value Disclosure 0  
Conversion Feature Liability
    
Liabilities    
Financial Liabilities Fair Value Disclosure 547,784  
Conversion Feature Liability | Fair Value, Inputs, Level 1
    
Liabilities    
Financial Liabilities Fair Value Disclosure 0  
Conversion Feature Liability | Fair Value, Inputs, Level 2
    
Liabilities    
Financial Liabilities Fair Value Disclosure 0  
Conversion Feature Liability | Fair Value, Inputs, Level 3
    
Liabilities    
Financial Liabilities Fair Value Disclosure $ 547,784