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v3.21.1

Stockholders' Equity - Stock Option Activity (Details) - USD ($) | 3 Months Ended |  |
--- | --- | --- | ---
Mar. 31, 2021 | Mar. 31, 2020 | Dec. 31, 2020 | Apr. 15, 2020
Weighted-average assumptions |  |  |  |
Granted (in shares) | 0 |  |  |
Number of Options |  |  |  |
Vested and expected to vest at March 31, 2021 (in shares) | 1,768,104 |  |  |
Weighted Average Exercise Price Per Share |  |  |  |
Vested and expected to vest at March 3,1 2021 (in USD per share) | $ 7.68 |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures |  |  |  |
Vested and expected to vest at March 31, 2021, intrinsic value | $ 11,572,933 |  |  |
Options to purchase Common Stock |  |  |  |
Weighted-average assumptions |  |  |  |
Risk-free interest rate |  | 1.80% |  |
Dividend yield (as a percent) |  | 0.00% |  |
Expected volatility (as a percent) |  | 102.00% |  |
Expected term |  | 6 years |  |
Number of Options |  |  |  |
Balance outstanding at the beginning of the period (in shares) | 1,860,507 |  |  |
Cancelled / Forfeited (in shares) | (10,770) |  |  |
Balance outstanding at the end of the period (in shares) | 1,849,737 |  |  |
Exercisable at the end of the period (in shares) | 756,300 |  |  |
Weighted Average Exercise Price Per Share |  |  |  |
Balance outstanding at the beginning of the period (in USD per share) | $ 7.43 |  |  |
Canceled / Forfeited (in USD per share) | 2.55 |  |  |
Balance outstanding at the end of the period (in USD per share) | 7.46 |  |  |
Exercisable at the end of the period (in USD per share) | $ 14.61 |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures |  |  |  |
Options outstanding, intrinsic value | $ 12,125,293 |  | $ 27,963,363 |
Exercisable at the end of the period, intrinsic value | $ 4,739,794 |  |  |
2014 EIP |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures |  |  |  |
Authorized shares under the plan (in shares) |  |  |  | 2,243,056
Number of remaining shares available for issuance (in shares) | 271,216 |  |  |

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- Definition The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term. + 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 (f)(2)(iii) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period. + 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 (f)(2)(ii) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition Number of shares authorized for issuance under share-based payment arrangement. + 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 (a)(3) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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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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- Definition 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. + 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 + Details
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