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Stockholders' Equity - Additional Information (Details) - USD ($) | 3 Months Ended | 6 Months Ended | 12 Months Ended |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2021 | Dec. 31, 2020 | Jun. 30, 2021 | Nov. 17, 2021 | Sep. 30, 2021 | Nov. 17, 2020 | Nov. 21, 2017 | Nov. 10, 2016
Weighted average remaining contractual life of all options outstanding |  |  | 5 years 1 month 2 days |  |  |  |  |  |  |
Remaining contractual life for options vested and exercisable |  |  | 4 years 9 months |  |  |  |  |  |  |
Aggregate intrinsic value of options outstanding | $ 2,609,281 |  | $ 2,609,281 |  |  |  |  |  |  |
Aggregate intrinsic value of options vested and exercisable | 2,593,873 |  | $ 2,593,873 |  |  |  |  |  |  |
Granted (in shares) |  |  | 64,076 |  |  |  |  |  |  |
Fair value of vested stock options | 55,669 | $ 342,158 | $ 127,668 | $ 419,785 |  |  |  |  |  |
Amount of unvested compensation related to stock options | 301,472 |  | 301,472 |  |  |  |  |  |  |
Proceeds from the exercise of stock options |  |  | $ 30,671 | 14,100 |  |  |  |  |  |
Number of shares available from stock options |  |  | 49,634 |  |  |  |  |  |  |
Fair value of vested restricted common stock | 244,870 | 93,790 | $ 343,981 | 186,954 |  |  |  |  |  |
Amount of stock authorized for repurchase |  |  |  |  | $ 349,263 |  |  |  |  |
Repurchase of common stock | $ 13,331 | 68,879 | $ 67,812 | 127,274 |  |  |  |  |  |
The Plans |  |  |  |  |  |  |  |  |  |
Vesting period |  |  | 3 years |  |  |  |  |  |  |
Number of year(s) cliff vesting period |  |  | 1 year |  |  |  |  |  |  |
Term number of years |  |  | 10 years |  |  |  |  |  |  |
2007 Plan |  |  |  |  |  |  |  |  |  |
Number of shares that may be issued pursuant to awards granted | 0 |  | 0 |  |  |  |  |  |  |
2017 Plan |  |  |  |  |  |  |  |  |  |
Number of shares that may be issued pursuant to awards granted | 4,284,903 |  | 4,284,903 |  |  |  |  |  | 1,874,513 |
Common Stock |  |  |  |  |  |  |  |  |  |
Granted (in shares) |  |  | 45,160 |  |  |  |  |  |  |
Fair value of vested stock options | $ 0 | $ 0 | $ 0 | $ 0 |  |  |  |  |  |
Number of shares of restricted common stock issued | 135,088 | 23,474 | 250,997 | 143,474 |  |  |  |  |  |
Fair value of vested restricted common stock | $ 135 | $ 23 | $ 251 | $ 143 |  |  |  |  |  |
Amount of repurchased shares | 5,951 | 31,167 | 27,316 | 56,667 |  |  |  |  |  |
Repurchase of common stock | $ 6 | $ 31 | $ 28 | $ 56 |  |  |  |  |  |
Employee |  |  |  |  |  |  |  |  |  |
Granted (in shares) |  |  | 64,076 |  |  |  |  |  |  |
Fair value of stock options granted |  |  | $ 88,448 |  |  |  |  |  |  |
Stock repurchased average price per share |  |  | $ 2.48 |  |  |  |  |  |  |
Amount of stock authorized for repurchase | $ 281,451 |  | $ 281,451 |  |  |  |  |  |  |
Repurchase of common stock |  |  | $ 67,812 |  |  |  |  |  |  |
Restricted common stock |  |  |  |  |  |  |  |  |  |
Restricted stock to employees vested |  |  | 150,523 |  |  |  |  |  |  |
Vesting period |  |  | 3 years |  |  |  |  |  |  |
Number of year(s) cliff vesting period |  |  | 1 year |  |  |  |  |  |  |
Number of shares of restricted common stock issued |  |  | 250,997 |  | 2,473,176 |  |  |  |  |
Fair value of vested restricted common stock |  |  | $ 643,842 |  | $ 3,173,312 |  |  |  |  |
Number of shares vested |  |  |  |  | $ 2,013,600 |  |  |  |  |
Forfeited, Number of shares |  |  |  |  | (214,324) |  |  |  |  |
Forfeited, Fair Value |  |  |  |  | $ 188,203 |  |  |  |  |
Amount recognized as expense related to stock issuance |  |  |  |  | $ 2,503,156 |  |  |  |  |
Balance of non-vested shares | 345,726 |  | 345,726 |  | 245,252 |  |  |  |  |
Non-vested stock | $ 781,814 |  | $ 781,814 |  | $ 481,953 |  |  |  |  |
Fair value of restricted common stock |  |  | $ 343,981 |  |  |  |  |  |  |
Restricted common stock | Vest Over Three Year Period One |  |  |  |  |  |  |  |  |  |
Restricted stock to employees vested |  |  | 150,997 |  |  |  |  |  |  |
Vesting period |  |  | 3 years |  |  |  |  |  |  |
Number of year(s) cliff vesting period |  |  | 1 year |  |  |  |  |  |  |
Restricted common stock | Vest Over Three Year Period Two |  |  |  |  |  |  |  |  |  |
Restricted stock to employees vested |  |  | 100,000 |  |  |  |  |  |  |
Vesting period |  |  | 4 years |  |  |  |  |  |  |
Number of year(s) cliff vesting period |  |  | 1 year |  |  |  |  |  |  |
Restricted common stock | Common Stock |  |  |  |  |  |  |  |  |  |
Fair value of restricted common stock |  |  | $ 343,981 |  |  |  |  |  |  |
Unvested Options [Member] |  |  |  |  |  |  |  |  |  |
Granted (in shares) |  |  | 64,076 |  |  |  |  |  |  |
Minimum |  |  |  |  |  |  |  |  |  |
Number of shares that may be issued pursuant to awards granted |  |  |  |  |  |  |  |  |  | 5,000,000
Stock repurchased average price per share |  |  | $ 2.19 |  |  |  |  |  |  |
Minimum | 2017 Plan |  |  |  |  |  |  |  |  |  |
Number of shares that may be issued pursuant to awards granted |  |  |  |  |  | 3,374,513 |  | 2,374,513 |  |
Minimum | Restricted common stock |  |  |  |  |  |  |  |  |  |
Vesting period |  |  | 3 years |  |  |  |  |  |  |
Maximum |  |  |  |  |  |  |  |  |  |
Number of shares that may be issued pursuant to awards granted |  |  |  |  |  |  |  |  |  | 7,000,000
Stock repurchased average price per share |  |  | $ 2.64 |  |  |  |  |  |  |
Amount of stock authorized for repurchase |  |  |  |  |  |  | $ 400,000 |  |  |
Share price | $ 4.00 |  | $ 4.00 |  |  |  |  |  |  |
Maximum | 2017 Plan |  |  |  |  |  |  |  |  |  |
Number of shares that may be issued pursuant to awards granted |  |  |  |  |  | 6,874,513 |  | 3,374,513 |  |
Maximum | Restricted common stock |  |  |  |  |  |  |  |  |  |
Vesting period |  |  | 4 years |  |  |  |  |  |  |

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- Definition The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable. + 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 -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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