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Stock-Based Compensation - Narrative (Details) - USD ($) |  |  |  | 1 Months Ended | 3 Months Ended | 6 Months Ended |
--- | --- | --- | --- | --- | --- | --- | ---
May 12, 2021 | May 12, 2020 | May 15, 2018 | Jan. 31, 2022 | Jun. 30, 2022 | Jun. 30, 2022 | May 16, 2019
Stock-Based Compensation |  |  |  |  |  |  |
Inducement stock options granted to new employees (in shares) |  |  |  |  |  | 471,790 |
Common stock options |  |  |  |  |  |  |
Stock-Based Compensation |  |  |  |  |  |  |
Unrecognized compensation expense related to unvested stock options |  |  |  |  | $ 122,500,000 | $ 122,500,000 |
Performance options |  |  |  |  |  |  |
Stock-Based Compensation |  |  |  |  |  |  |
Options outstanding (in shares) |  |  |  |  | 114,780 | 114,780 |
PSUs issued |  |  |  | 271,612 |  |  |
Potential award payout |  |  |  | 100.00% |  |  |
Volatility rate |  |  |  | 65.40% |  |  |
Risk-free interest rate |  |  |  | 1.03% |  |  |
Weighted average grant date fair value (in dollars per share) |  |  |  | $ 39.12 |  |  |
Unrecognized compensation expense |  |  |  |  | $ 10,500,000 | $ 10,500,000 |
Allocated share-based compensation expense |  |  |  |  | 0 | 0 |
Performance options | Minimum |  |  |  |  |  |  |
Stock-Based Compensation |  |  |  |  |  |  |
Potential award payout |  |  |  | 0.00% |  |  |
Performance options | Maximum |  |  |  |  |  |  |
Stock-Based Compensation |  |  |  |  |  |  |
Potential award payout |  |  |  | 250.00% |  |  |
Unvested restricted stock and RSUs |  |  |  |  |  |  |
Stock-Based Compensation |  |  |  |  |  |  |
Unrecognized compensation expense related to unvested RSU awards |  |  |  |  | $ 32,500,000 | $ 32,500,000 |
2019 Incentive Plan |  |  |  |  |  |  |
Stock-Based Compensation |  |  |  |  |  |  |
Shares of common stock, maximum authorized for issuance (in shares) |  |  |  |  |  |  | 3,500,000
Number of additional shares authorized (in shares) | 3,000,000 | 4,500,000 |  |  |  |  |
Shares available for grant (in shares) |  |  |  |  | 2,145,104 | 2,145,104 |
2019 Incentive Plan, Second Amendment |  |  |  |  |  |  |
Stock-Based Compensation |  |  |  |  |  |  |
Number of additional shares authorized (in shares) | 2,750,000 |  |  |  |  |  |
2018 ESPP |  |  |  |  |  |  |
Stock-Based Compensation |  |  |  |  |  |  |
Shares of common stock, maximum authorized for issuance (in shares) |  |  | 1,000,000 |  |  |  |
Number of additional shares authorized (in shares) |  |  | 1,200,000 |  |  |  |
Percentage of outstanding shares |  |  | 2.00% |  |  |  |

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- Definition Amount of cost to be recognized for nonvested award under share-based payment arrangement. Excludes share and unit options. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (i) -URI https://asc.fasb.org/extlink&oid=128089324&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://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2)(ii) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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