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Cash, Cash Equivalents and Short-Term Investments - Summary of Short-term Investments with Unrealized Losses (Details) | Jun. 30, 2018 USD ($)
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Cash And Cash Equivalents And Short Term Investments [Line Items] |
Less Than 12 Months, Estimated Fair Value | $ 11,362,444
Less Than 12 Months, Unrealized Losses. | (7,725)
US Treasury Securities |
Cash And Cash Equivalents And Short Term Investments [Line Items] |
Less Than 12 Months, Estimated Fair Value | 2,498,608
Less Than 12 Months, Unrealized Losses. | (2,297)
Corporate Debt Securities |
Cash And Cash Equivalents And Short Term Investments [Line Items] |
Less Than 12 Months, Estimated Fair Value | 4,548,276
Less Than 12 Months, Unrealized Losses. | (1,834)
Asset-backed Securities |
Cash And Cash Equivalents And Short Term Investments [Line Items] |
Less Than 12 Months, Estimated Fair Value | 4,315,560
Less Than 12 Months, Unrealized Losses. | $ (3,594)

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- Definition Cash and cash equivalents and short-term investments. + References No definition available. + Details
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- Definition This item represents the aggregate fair value of investments in debt and equity securities categorized neither as held-to-maturity nor trading securities that have been in a continuous unrealized loss position for less than twelve months. + References No definition available. + Details
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- Definition Amount of accumulated unrealized loss on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in continuous unrealized loss position for less than 12 months. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=82897076&loc=d3e27337-111563 + Details
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