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Cash, Cash Equivalents and Short-Term Investments - Summary of Short-term Investments with Unrealized Losses (Details)	Jun. 30, 2018 USD ($)
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)

X

- Definition

Cash and cash equivalents and short-term investments.

+ References

No definition available.

+ Details

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X

- 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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X

- 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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- Details

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