Stock-Based Compensation - Schedule of Information Related to Stock Options Outstanding (Detail)	6 Months Ended
Jun. 30, 2020 USD ($) $ / shares shares
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Number of Stock Options, Outstanding \| shares	1,477,153
Number of Stock Options, Exercisable \| shares	416,022
Number of Stock Options, Unvested \| shares	1,061,131
Weighted-average Exercise Price, Outstanding \| $ / shares	$ 3.65
Weighted-average Exercise Price, Exercisable \| $ / shares	5.97
Weighted-average Exercise Price, Unvested \| $ / shares	$ 2.74
Weighted-average Remaining Contractual Term, Outstanding	5 years 11 months 15 days
Weighted-average Remaining Contractual Term, Exercisable	5 years 8 months 8 days
Weighted-average Remaining Contractual Term, Unvested	6 years 25 days
Aggregate Intrinsic Value, Outstanding \| $	$ 12,804,940
Aggregate Intrinsic Value, Exercisable \| $	3,097,502
Aggregate Intrinsic Value, Unvested \| $	$ 9,707,438

Share based compensation arrangement by share based payment award options nonvested outstanding intrinsic value.

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- Definition

Share based compensation arrangement by share based payment award options unvested outstanding weighted average exercise price.

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Share based compensation arrangement by share based payment award options unvested outstanding weighted average remaining contractual term.

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The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(iii)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

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The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.

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Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding.

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Number of options outstanding, including both vested and non-vested options.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
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Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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-Publisher FASB
-Name Accounting Standards Codification
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Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of vested portions of options outstanding and currently exercisable.

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Weighted average remaining contractual term for vested portions of options outstanding and currently exercisable or convertible, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Number of non-vested options outstanding.

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Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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