Calyxt, Inc. Quarterly report pursuant to Section 13 or 15(d)

Interim Funding - Additional Information (Detail) - USD ($) $ in Thousands			1 Months Ended	3 Months Ended
	Mar. 31, 2023	Mar. 15, 2023	Apr. 30, 2023	Mar. 31, 2023	Mar. 31, 2022
Disclosure Of Interim Funding [Line Items]
Proceeds From Interim Funding				$ 1,000	$ 0
Cibus Global, LLC [Member]
Disclosure Of Interim Funding [Line Items]
Unrestricted cash		$ 1,500
Proceeds From Interim Funding	$ 1,000
Revolving Credit Facility [Member] \| Cibus Global, LLC [Member]
Disclosure Of Interim Funding [Line Items]
Proceeds from Lines of Credit		500
Line of credit facility, increase (decrease), net		4,000
Line of credit facility, maximum borrowing capacity		$ 3,000
Subsequent Event [Member] \| Cibus Global, LLC [Member]
Disclosure Of Interim Funding [Line Items]
Proceeds from Lines of Credit			$ 500
Subsequent Event [Member] \| Revolving Credit Facility [Member] \| Cibus Global, LLC [Member]
Disclosure Of Interim Funding [Line Items]
Proceeds from Lines of Credit			$ 500