Quarterly report pursuant to Section 13 or 15(d)

Cover Page

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Cover Page - shares
9 Months Ended
Sep. 30, 2023
Oct. 30, 2023
Cover [Abstract]    
Document Type 10-Q/A  
Amendment Flag true  
Amendment Description Amendment No. 1 on Form 10-Q/A to amend its Quarterly Report on Form 10-Q for the quarter ended September 30, 2023, initially filed with the Securities and Exchange Commission and SEDAR on November 9, 2023 (the "Original Form 10-Q"). This Form 10-Q/A amends and restates Items 1, 2, and 4 of Part I of the Original Form 10-Q which includes the Company's restated unaudited interim condensed consolidated financial statements for the three and nine months ended September 30, 2023 and related notes (the "Amended Form 10-Q").  In connection with the preparation of the Company's consolidated financial statements for the fiscal year ended December 31, 2023, the Company’s management identified an error related to its financial reporting process in connection with an intercompany consolidation of two wholly-owned subsidiaries and in the valuation of inventory, both resulting in an overstatement of inventory in the Original Form 10-Q. This error resulted in an overstatement of 'inventories, net' and 'accrued and other current liabilities' on the unaudited interim condensed consolidated balance sheet as of September 30, 2023, and an overstatement of 'income tax expense', and an understatement of 'cost and expenses applicable to revenues', on its unaudited interim condensed consolidated statements of operations for the three and nine months ended September 30, 2023. This error has no impact on the cash balance as of September 30, 2023 and results in no net change in cash flows for the nine months ended September 30, 2023, which is illustrated in further detail in Note 15 of the Financial Statements in Item 1 of Part I of this Amended Form 10-Q.  The Company has made no attempt in this Quarterly Report on Form 10-Q/A to modify or update the disclosures presented in the Original Form 10-Q other than as noted in the previous paragraph. Except as noted above, this Quarterly Report on Form 10-Q/A does not reflect events occurring after the filing of the Original Report. Accordingly, this Quarterly Report on Form 10-Q/A should be read in conjunction with the Company’s other filings with the Securities and Exchange Commission (“SEC”) subsequent to the filing of the Original Form 10-Q, including any amendments thereto.  In accordance with Rule 12b-15 of the Securities and Exchange of Act of 1934, as amended (the "Exchange Act"), this Form 10-Q/A includes new certifications by the Company's Chief Executive Officer and Chief Financial Officer filed as Exhibits 31.1, 31.2, 32.1 and 32.2 to this Form 10-Q/A.  
Document Period End Date Sep. 30, 2023  
Document Fiscal Year Focus 2023  
Document Fiscal Period Focus Q3  
Entity Registrant Name IANTHUS CAPITAL HOLDINGS, INC.  
Entity Central Index Key 0001643154  
Current Fiscal Year End Date --12-31  
Entity Current Reporting Status Yes  
Entity Filer Category Non-accelerated Filer  
Entity Shell Company false  
Entity Small Business true  
Entity Emerging Growth Company true  
Entity Ex Transition Period false  
Entity Interactive Data Current Yes  
Securities Act File Number 000-56228  
Entity Tax Identification Number 98-1360810  
Entity Address, Address Line One 214 King Street  
Entity Address, City or Town Suite 314  
Entity Address, State or Province ON  
Entity Address, Postal Zip Code M5H 3S6  
City Area Code 646  
Local Phone Number 518-9418  
Document Quarterly Report true  
Document Transition Report false  
Entity Incorporation, State or Country Code Z4  
Entity Common Stock, Shares Outstanding   6,510,526,890