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Stockholders' Equity - Additional Information (Details) - USD ($) |  |  |  |  |  |  |  | 1 Months Ended | 12 Months Ended |  |
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Aug. 16, 2019 | Jul. 15, 2019 | May 14, 2019 | Feb. 06, 2019 | Feb. 06, 2019 | Jan. 14, 2019 | Jan. 02, 2019 | Jan. 08, 2018 | Feb. 13, 2019 | Dec. 21, 2018 | Jul. 24, 2018 | Apr. 16, 2018 | Jan. 29, 2018 | Dec. 31, 2019 | Dec. 31, 2018 | Mar. 06, 2018 | Jan. 05, 2018
Stock Issued During Period, Shares, New Issues |  |  | 5,046,763 |  | 236,466 |  |  |  |  |  |  |  |  | 2,730,000 |  |  |  |  |
Shares Issued, Price Per Share |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 10.00 |  |  |  |  |
Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Stock Options |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 3,249,222 |  |  |  |
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1 year 10 months 24 days |  |  |  |
Net Proceeds From Issuance Of Common Stock |  |  | $ 13,000,000 |  |  |  |  |  |  |  |  |  |  | $ 24,500,000 |  |  |  |  |
Payment of Financing and Stock Issuance Costs |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 2,800,000 |  |  |  |  |
Convertible Preferred Stock, Shares Issued upon Conversion |  |  |  |  |  |  |  |  |  |  |  |  |  | 4,702,116 |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Description |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | vest over three years from the date of grant with one-third vesting on the one-year anniversary of the date of grant and the balance vesting monthly over the remaining 24 months |  |  |
Gross Proceeds Of Stock Value Issued During Period |  |  | $ 14,000,000 |  |  |  |  |  |  |  |  |  |  | $ 27,300,000 |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Grant Date Intrinsic Value |  |  |  |  |  |  |  |  |  |  |  |  | $ 1,412,700 |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period |  |  |  |  |  |  | 3 years |  |  |  |  |  | 36 months |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross |  |  |  |  |  |  |  |  |  |  |  |  | 175,668 |  |  |  |  |  |
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price |  |  |  |  |  |  | $ 2.74 |  |  |  |  |  | $ 8.72 |  | $ 3.10 | $ 6.39 |  |  |
Share-based Compensation |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 2,511,944 | $ 1,615,470 |  |  |
Sharebased Compensation Arrangement by Sharebased Payment Award Options Grants in Period Grant Date Fair Value |  |  |  |  |  |  | $ 27,500 |  |  |  |  |  |  |  |  | 2,237,800 |  |  |
Proceeds from Issuance of Common Stock | [1] |  |  |  |  |  |  |  |  |  |  |  |  |  | 13,214,949 | 0 |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross |  |  |  |  |  |  |  |  |  |  |  |  | 175,668 |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award Accelerated Compensation Cost |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 609,322 |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period |  |  |  | 34,815 | 320,001 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangements by Share-based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price |  |  |  | $ 1.95 |  | $ 1.24 |  |  |  |  |  |  |  |  |  |  |  |  |
Stockholders' Equity, Reverse Stock Split |  |  |  |  |  |  |  |  | 1-for-3.75 |  |  |  |  |  |  |  |  |  |
Remittance of employee's Payroll Taxes |  |  |  |  |  |  |  | $ 62,193 |  |  |  |  |  |  |  |  |  |  |
Proceeds from Stock Options Exercised |  |  |  | $ 67,889 |  |  |  | $ 483,888 |  |  |  |  |  |  | 551,777 | 56,482 |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Accelerated Vesting, Number |  |  |  |  |  |  |  |  |  | 124,210 |  |  |  |  |  |  |  |  |
Research and Development Expense [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,459,055 | 818,239 |  |  |
General and Administrative Expense [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 1,052,889 | $ 797,231 |  |  |
Restricted Stock Units (RSUs) [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value |  | $ 125,000 |  |  |  |  |  |  |  |  |  | $ 125,000 |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period |  | 40,190 |  |  |  |  |  |  |  |  |  | 20,165 |  |  |  |  |  |  |
Common Stock [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shares Issued, Price Per Share |  |  |  |  |  |  |  |  |  |  | $ 2.45 |  |  |  |  |  |  |  |
Payment of Financing and Stock Issuance Costs |  |  |  |  |  |  |  |  |  |  | $ 600,000 |  |  |  |  |  |  |  |
Proceeds Of Stock Issued During Period Gross |  |  |  |  |  |  |  |  |  |  | 2,800,000 |  |  |  |  |  |  |  |
Proceeds from Issuance of Common Stock |  |  |  |  |  |  |  |  |  |  | $ 3,400,000 |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period |  |  |  |  |  |  |  | 133,686 |  |  |  |  |  |  | 34 | 28,965 |  |  |
Share-based Compensation Arrangements by Share-based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price |  |  |  |  |  |  |  | $ 1.95 |  |  |  |  |  |  |  |  |  |  |
Stock Issued During Period Shares New Issues Two |  |  |  |  |  |  |  |  |  |  | 1,380,000 |  |  |  |  | 1,380,000 | [2] |  |
IPO [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock Issued During Period, Shares, New Issues |  |  | 4,388,490 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shares Issued, Price Per Share |  |  | $ 2.78 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Over-Allotment Option [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock Issued During Period, Shares, New Issues |  |  | 658,273 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Award, Tranche One [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross |  | 636,287 |  |  |  |  | 11,000 |  |  |  |  |  |  |  |  | 313,674 |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross |  | 636,287 |  |  |  |  | 11,000 |  |  |  |  |  |  |  |  | 313,674 |  |  |
Share-based Compensation Award, Tranche Two [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period |  | 24 months |  |  |  |  | 24 months |  |  |  |  |  |  |  |  | 36 months |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross |  | 45,285 |  |  |  |  |  |  |  |  |  |  |  |  |  | 60,000 |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross |  | 45,285 |  |  |  |  |  |  |  |  |  |  |  |  |  | 60,000 |  |  |
Share-based Compensation Award, Tranche Three [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 22,325 |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 22,325 |  |  |
Maximum [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 6.30 |  |  |
Minimum [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 5.10 |  |  |
Employees Consultants and Directors Under the 2018 Plan [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross |  | 681,572 |  |  |  |  | 11,000 |  |  |  |  |  |  |  |  | 395,999 |  |  |
Sharebased Compensation Arrangement by Sharebased Payment Award Options Grants in Period Grant Date Fair Value |  | $ 1,909,700 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross |  | 681,572 |  |  |  |  | 11,000 |  |  |  |  |  |  |  |  | 395,999 |  |  |
Share-based Compensation Arrangements by Share-based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price |  | $ 3.11 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Omnibus Stock Incentive Plan 2018 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,250,000 |
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 106,074 |  |  |  |
Equity Incentive Plan [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 15,333 |  |  |  |
Equity Incentive Plan [Member] | Maximum [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,866,667
Equity Incentive Plan [Member] | Minimum [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,733,333
Series A Convertible Preferred Stock [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 |  |  |
Stock Issued During Period Shares New Issues Two | [2] |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 |  |  |
Series B Convertible Preferred Stock [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 |  |  |
Convertible Preferred Stock, Terms of Conversion |  |  |  |  |  |  |  |  |  |  |  |  |  |  | The Series B Convertible Preferred did not contain a redemption provision and an overall analysis of its features performed by the Company determined that it was more akin to equity and therefore, has been classified within stockholders' equity on the balance sheet. While the embedded conversion option ("ECO") was subject to an anti-dilution price adjustment, since the ECO was clearly and closely related to the equity host, it was not required to be bifurcated and accounted for as a derivative liability under ASC 815. The Company determined that the Series B Convertible Preferred did not contain a beneficial conversion feature, since the conversion price exceeded the estimated fair value of the Company's common stock as of the commitment date.The Series B Convertible Preferred Stock was convertible, at the option of the holder, at any time into shares of common stock on a one-for-one basis, subject to certain adjustments. In the event of any issuances by the Company for less than the in-force conversion price, the Series B Convertible Preferred Stock conversion price would be reduced on a weighted average basis. Each share of Series B Convertible Preferred Stock was automatically convertible into shares of common stock at the then effective conversion price: (i) immediately prior to the closing of a firm commitment underwritten initial public offering provided that (A) the aggregate offering price, net of underwriters' discounts and expenses, is at least $2.00 per share of common stock and (B) the aggregate proceeds of such offering are not less than $20,000,000; or (ii) the date specified by written consent or agreement of the holders of at least 75% of the then outstanding shares of preferred stock. |  |  |  |
Stock Issued During Period Shares New Issues Two | [2] |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 |  |  |
Series And Series A2 Convertible Preferred Stock [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Convertible Preferred Stock, Terms of Conversion |  |  |  |  |  |  |  |  |  |  |  |  |  |  | The Series A and Series A-2 Convertible Preferred Stock was convertible, at the option of the holder, at any time into shares of common stock on a one-for-one basis. In the event of any issuances by the Company for less than the in-force conversion price, the preferred stock conversion price would be reduced on a weighted average basis. Each share of preferred stock was automatically convertible into shares of common stock at the then effective conversion price: (i) immediately prior to the closing of a firm commitment underwritten initial public offering provided that (A) the aggregate offering price, net of underwriters' discounts and expenses, was at least $2.00 per share of common stock and (B) the aggregate proceeds of such offering were not less than $20,000,000; or (ii) the date specified by written consent or agreement of the holders of at least 75% of the then outstanding shares of preferred stock. |  |  |  |
[1] | [3] Includes gross proceeds of $14,030,001, less total issuance costs of $815,052 deducted directly from the offering proceeds.
[2] | [2] Includes gross proceeds of $3,381,000, less total issuance costs of $563,251.

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