Cash, Cash Equivalents and Short-Term Investments - Summary of Short-term Investments with Unrealized Losses (Details) |
Sep. 30, 2018
USD ($)
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| Cash And Cash Equivalents And Short Term Investments [Line Items] | |
| Less Than 12 Months, Estimated Fair Value | $ 7,793,498 |
| Less Than 12 Months, Unrealized Losses. | (3,717) |
| Corporate Debt Securities | |
| Cash And Cash Equivalents And Short Term Investments [Line Items] | |
| Less Than 12 Months, Estimated Fair Value | 4,482,979 |
| Less Than 12 Months, Unrealized Losses. | (2,091) |
| Asset-backed Securities | |
| Cash And Cash Equivalents And Short Term Investments [Line Items] | |
| Less Than 12 Months, Estimated Fair Value | 3,310,519 |
| Less Than 12 Months, Unrealized Losses. | $ (1,626) |
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- Definition Cash and cash equivalents and short-term investments. No definition available.
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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. No definition available.
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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. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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