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Stock-Based Compensation - Additional Information (Detail) - USD ($) $ in Millions | Dec. 31, 2022 | Jul. 16, 2021 | Feb. 19, 2021
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Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Share-based compensation arrangement by share-based payment award, number of shares registered and available for grant | 2,718,149 |  |
Mr. Blome [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Expected benefit to earnings from recapture of non-cash stock compensation expense |  |  | $ 2.5
2017 Omnibus Plan [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Share-based compensation arrangement by share-based payment award, number of shares registered and available for grant | 3,112,568 |  |
Number of common shares available for issue |  | 4,299,904 |
Calyxt, Inc. Equity Employee Inducement Incentive Plan [Member] | PSUs [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Share-based compensation arrangement by share-based payment award, number of shares registered and available for grant |  | 600,000 |

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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 https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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