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Major Category of Assets Measured at Fair Value on Recurring Basis (Detail) (Fair Value, Measurements, Recurring, USD $) | Mar. 31, 2014
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Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items] |
Assets | $ 44,409,659
Money market funds |
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items] |
Assets | 11,953,743
U.S. Government and agency securities |
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items] |
Assets | 18,442,561
Corporate and other debt securities |
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items] |
Assets | 14,013,355
Quoted prices in active markets for identical assets (Level 1) |
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items] |
Assets | 22,158,463
Quoted prices in active markets for identical assets (Level 1) | Money market funds |
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items] |
Assets | 11,953,743
Quoted prices in active markets for identical assets (Level 1) | U.S. Government and agency securities |
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items] |
Assets | 10,204,720
Significant other observable inputs (Level 2) |
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items] |
Assets | 22,251,196
Significant other observable inputs (Level 2) | U.S. Government and agency securities |
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items] |
Assets | 8,237,841
Significant other observable inputs (Level 2) | Corporate and other debt securities |
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items] |
Assets | $ 14,013,355

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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=25499696&loc=d3e19207-110258 + Details
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