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Fair Value Measurement - Roll Forward for Financial Assets and Liabilities Measured at Fair Value Using Significant Other Observable Inputs (Level 2) (Detail) (Fair Value, Measurements [Member], USD $) | 3 Months Ended
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Mar. 31, 2014
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
Marketable debt securities, Ending Balance | $ 26,032,328
Significant Other Observable Inputs (Level 2) [Member] |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
Marketable debt securities, Ending Balance |
Significant Other Observable Inputs (Level 2) [Member] | Bond obligation [Member] |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
Marketable debt securities, Beginning Balance | 125,000
Fair Value Measurement With Unobservable inputs reconciliation recurring basis asset transfers into level 1 |
Financial liabilities change included in earning fair value disclosure |
Financial liabilities change settled in earning fair value disclosure | (53,750)
Marketable debt securities, Ending Balance | $ 71,250

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- Definition Fair Value Measurement With Directly Or Indirectly Observable Inputs Reconciliation Recurring Basis Liability Gain Loss Included In Earnings + References No definition available. + Details
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- Definition Fair Value Measurement With Directly Or Indirectly Observable Inputs Reconciliation Recurring Basis Liability Settlements + References No definition available. + Details
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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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- Definition Amount of transfers of assets measured on a recurring basis out of Level 2 of the fair value hierarchy into Level 1. + 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 (bb) -URI http://asc.fasb.org/extlink&oid=25499696&loc=d3e19207-110258 + Details
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- Details
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