Available-for-Sale Securities - Summary of Debt Securities with Unrealized Losses (Details)	Sep. 30, 2018 USD ($)
Schedule Of Available For Sale Securities [Line Items]
Under 1 Year, Fair Value	$ 12,394,826
Under 1 Year, Gross Unrealized Losses	(8,882)
Total, Fair Value	12,394,826
Total, Gross Unrealized Losses	(8,882)
U.S. Treasury Securities
Schedule Of Available For Sale Securities [Line Items]
Under 1 Year, Fair Value	9,995,100
Under 1 Year, Gross Unrealized Losses	(7,627)
Total, Fair Value	9,995,100
Total, Gross Unrealized Losses	(7,627)
Corporate Debt Securities
Schedule Of Available For Sale Securities [Line Items]
Under 1 Year, Fair Value	2,399,726
Under 1 Year, Gross Unrealized Losses	(1,255)
Total, Fair Value	2,399,726
Total, Gross Unrealized Losses	$ (1,255)

Amount of accumulated unrealized loss on investments in debt and equity securities classified as available-for-sale in a continuous loss position.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-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

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Amount of accumulated unrealized loss on investments in debt and equity securities classified as available-for-sale that have been in a continuous loss position for less than twelve months.

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