iAnthus Capital Holdings, Inc. Quarterly report pursuant to Section 13 or 15(d)

Unaudited Interim Condensed Consolidated Statements of Cash Flows Supplemental Information - Summary of Significant Non-Cash Investing and Financing Activities (Detail) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Cash Flow Non Cash Investing And Financing Activities Disclosure [Line Items]
Non-cash consideration for paid-in-kind interest	$ 15,142	$ 17,516
Non-cash issuance of shares from consummation of the Recapitalization Transaction	455,443
Non-cash debt extinguishment from the consummation of the Recapitalization Transaction	(238,269)
Non-cash issuance of June Secured Debentures and June Unsecured Debentures from the consummation of the Recapitalization Transaction	99,402
Shares issued to settle MPX purchase options assumed from the MPX Acquisition	1,500
New Jersey Senior Secured Bridge Notes [Member] \| I Anthus New Jersey LLC [Member]
Cash Flow Non Cash Investing And Financing Activities Disclosure [Line Items]
Non-cash consideration for paid-in-kind interest	4,949	$ 1,996
Non-cash consideration for asset acquisition	$ 19,193