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Stock-based Compensation - Additional Information (Details) - USD ($) | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | ---
Jun. 30, 2021 | Jun. 30, 2020 | Jun. 30, 2021 | Jun. 30, 2020 | Dec. 31, 2020
Deferred Compensation Arrangement With Individual Share Based Payments [Line Items] |  |  |  |  |
Common stock, shares authorized | 50,700,000 |  | 50,700,000 |  | 50,700,000
Original term of options |  |  | 10 years |  |
Weighted average grant-date fair value of options granted |  |  | $ 4.02 | $ 0.96 |
Tax benefit from stock based compensation expense | $ 0 | $ 0 | $ 0 | $ 0 |
Restricted Stock [Member] |  |  |  |  |
Deferred Compensation Arrangement With Individual Share Based Payments [Line Items] |  |  |  |  |
Share-based payment arrangement, unrecognized stock based compensation cost | $ 4,700,000 |  | $ 4,700,000 |  |
Performance Based Award [Member] |  |  |  |  |
Deferred Compensation Arrangement With Individual Share Based Payments [Line Items] |  |  |  |  |
Weighted-average period over which cost not yet recognized is expected to be recognized |  |  | 3 years |  |
Minimum |  |  |  |  |
Deferred Compensation Arrangement With Individual Share Based Payments [Line Items] |  |  |  |  |
Vesting period |  |  | 1 year |  |
Maximum |  |  |  |  |
Deferred Compensation Arrangement With Individual Share Based Payments [Line Items] |  |  |  |  |
Vesting period |  |  | 4 years |  |
2018 Equity Incentive Plan |  |  |  |  |
Deferred Compensation Arrangement With Individual Share Based Payments [Line Items] |  |  |  |  |
Common stock, shares authorized | 2,101,478 |  | 2,101,478 |  |
Stock awards, granted |  |  | 476,840 |  | 854,320

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- Definition Maximum term of the deferred compensation arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + 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)(2) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 710 -SubTopic 10 -Section 55 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=6409961&loc=d3e20487-108367 + Details
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