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Stockholders' Equity - Additional Information (Details) |  |  | 1 Months Ended | 12 Months Ended |  |  |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Jun. 24, 2020 $ / shares shares | Oct. 10, 2017 shares | Dec. 31, 2015 shares | Dec. 31, 2011 shares | Dec. 31, 2021 USD ($) $ / shares shares | Dec. 31, 2020 USD ($) $ / shares shares | Aug. 12, 2021 shares | Jun. 21, 2021 $ / shares shares | May 19, 2021 shares | May 18, 2021 shares | Jun. 23, 2020 shares | Apr. 30, 2019 $ / shares | Dec. 18, 2017 shares
Class Of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred stock, shares authorized |  |  |  |  | 10,000,000 |  |  |  |  |  |  |  |
Common stock, shares authorized |  |  |  |  | 50,000,000 | 50,000,000 |  |  |  |  |  |  |
Common stock, par value | $ / shares |  |  |  |  | $ 0.0001 | $ 0.0001 |  |  |  |  |  |  |
Common stock voting rights |  |  |  |  | one vote for each share |  |  |  |  |  |  |  |
Preferred stock, shares outstanding |  |  |  |  | 0 |  |  |  |  |  |  |  |
Unvested common stock options, net of estimated forfeitures | $ |  |  |  |  | $ 10,232 |  |  |  |  |  |  |  |
Unearned stock-based compensation expected to be recognized |  |  |  |  | 11 months 4 days |  |  |  |  |  |  |  |
April 2019 Notes |  |  |  |  |  |  |  |  |  |  |  |  |
Class Of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Warrants exercise price | $ / shares |  |  |  |  |  |  |  |  |  |  |  | $ 2.15 |
April 2019 Notes | Exercise Price |  |  |  |  |  |  |  |  |  |  |  |  |
Class Of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Warrants exercise price | $ / shares |  |  |  |  | $ 2.15 |  |  |  |  |  |  |  |
Restricted Stock Units |  |  |  |  |  |  |  |  |  |  |  |  |
Class Of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Number of shares, granted |  |  |  |  | 432,196 | 554,251 |  |  |  |  |  |  |
Weighted average exercise price | $ / shares |  |  |  |  | $ 5.76 | $ 2.63 |  |  |  |  |  |  |
Unvested common stock options, net of estimated forfeitures | $ |  |  |  |  | $ 1,972,787 |  |  |  |  |  |  |  |
Unearned stock-based compensation expected to be recognized |  |  |  |  | 2 years 3 days |  |  |  |  |  |  |  |
Number of shares issued during the period |  |  |  |  | 254,954 | 123,440 |  |  |  |  |  |  |
Number of shares retained for income tax purposes |  |  |  |  | 143,239 | 27,811 |  |  |  |  |  |  |
Incentive Stock Options |  |  |  |  |  |  |  |  |  |  |  |  |
Class Of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Stock price | $ / shares |  |  |  |  | $ 5.50 |  |  |  |  |  |  |  |
Multiplier for calculating share vested on determined date |  |  |  |  | 1,177.52 |  |  |  |  |  |  |  |
Cashless Exercise of Stock Options |  |  |  |  |  |  |  |  |  |  |  |  |
Class Of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Number of common stock issued |  |  |  |  |  | 240,381 |  |  |  |  |  |  |
2017 Equity Incentive Plan | Restricted Stock Units |  |  |  |  |  |  |  |  |  |  |  |  |
Class Of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Vesting period |  |  |  |  | 3 years |  |  |  |  |  |  |  |
Common Stock | 2017 Equity Incentive Plan |  |  |  |  |  |  |  |  |  |  |  |  |
Class Of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Shares available for grant |  |  |  |  | 1,105,270 |  |  |  |  |  |  |  |
Shares authorized for issuance |  |  |  |  |  |  | 1,500,000 |  | 3,000,000 | 1,500,000 |  |  |
Common Stock | Amendment to 2017 Equity Incentive Plan |  |  |  |  |  |  |  |  |  |  |  |  |
Class Of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Shares authorized for issuance | 1,000,000 |  |  |  |  |  |  |  |  |  | 500,000 |  |
2011 Plan | Common Stock |  |  |  |  |  |  |  |  |  |  |  |  |
Class Of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Shares available for grant |  |  |  |  |  | 240,000 |  |  |  |  |  |  |
2015 Plan | Common Stock |  |  |  |  |  |  |  |  |  |  |  |  |
Class Of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Shares available for grant |  |  |  |  |  | 790,000 |  |  |  |  |  |  |
Stock Options |  |  |  |  |  |  |  |  |  |  |  |  |
Class Of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Number of common stock issued |  |  |  |  | 280,996 | 314,236 |  |  |  |  |  |  |
Proceeds from stock options exercised | $ |  |  |  |  | $ 294,390 | $ 86,892 |  |  |  |  |  |  |
Maximum |  |  |  |  |  |  |  |  |  |  |  |  |
Class Of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Ownership interest percentage |  |  |  |  | 10.00% |  |  |  |  |  |  |  |
Options expiration period date of grant |  |  |  |  | 10 years |  |  |  |  |  |  |  |
Maximum | Common Stock | 2017 Equity Incentive Plan |  |  |  |  |  |  |  |  |  |  |  |  |
Class Of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Shares authorized for issuance |  |  |  |  |  |  |  |  |  |  |  |  | 1,500,000
Maximum | 2011 Plan | Common Stock |  |  |  |  |  |  |  |  |  |  |  |  |
Class Of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Number of shares granted |  |  |  | 1,500,000 |  |  |  |  |  |  |  |  |
Maximum | 2015 Plan | Common Stock |  |  |  |  |  |  |  |  |  |  |  |  |
Class Of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Number of shares granted |  |  | 1,500,000 |  |  |  |  |  |  |  |  |  |
Minimum |  |  |  |  |  |  |  |  |  |  |  |  |
Class Of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Fair market value of common stock on date of grant |  |  |  |  | 110.00% |  |  |  |  |  |  |  |
Options expiration period date of grant |  |  |  |  | 5 years |  |  |  |  |  |  |  |
Board of Directors | 2011 Plan | Common Stock |  |  |  |  |  |  |  |  |  |  |  |  |
Class Of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Shares available for grant |  | 0 |  |  |  |  |  |  |  |  |  |  |
Stock options, termination date |  | Oct. 10, 2017 |  |  |  |  |  |  |  |  |  |  |
Board of Directors | 2015 Plan | Common Stock |  |  |  |  |  |  |  |  |  |  |  |  |
Class Of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Shares available for grant |  | 0 |  |  |  |  |  |  |  |  |  |  |
Stock options, termination date |  | Oct. 10, 2017 |  |  |  |  |  |  |  |  |  |  |
Mr. Raun | Restricted Stock Units |  |  |  |  |  |  |  |  |  |  |  |  |
Class Of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Number of shares, granted | 412,125 |  |  |  |  |  |  |  |  |  |  |  |
Vesting period | 3 years |  |  |  |  |  |  |  |  |  |  |  |
Vesting percentage | 33.33% |  |  |  |  |  |  |  |  |  |  |  |
Mr. Raun | Incentive Stock Options |  |  |  |  |  |  |  |  |  |  |  |  |
Class Of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Number of shares granted | 412,125 |  |  |  |  |  |  |  |  |  |  |  |
Weighted average exercise price | $ / shares | $ 2.14 |  |  |  |  |  |  |  |  |  |  |  |
Employees, Officers, Directors, Consultants and Advisors |  |  |  |  |  |  |  |  |  |  |  |  |
Class Of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Common stock, par value | $ / shares |  |  |  |  |  |  |  | $ 0.0001 |  |  |  |  |
Employees, Officers, Directors, Consultants and Advisors | Common Stock |  |  |  |  |  |  |  |  |  |  |  |  |
Class Of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Shares available for grant |  |  |  |  |  |  |  | 3,543,114 |  |  |  |  |

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