iAnthus Capital Holdings, Inc. Annual report pursuant to Section 13 and 15(d)

Annual report pursuant to Section 13 and 15(d)

Summary of Significant Accounting Policies - Additional Information (Detail)

Summary of Significant Accounting Policies - Additional Information (Detail) - USD ($)				12 Months Ended
	Feb. 06, 2023	Feb. 02, 2023	Jun. 24, 2022	Dec. 31, 2023	Dec. 31, 2022	Feb. 01, 2022	Jan. 01, 2022	Feb. 02, 2021	May 19, 2020
Net Cash Provided by (Used in) Operating Activities				$ 3,017,000	$ (19,496,000)
Net income Loss				76,600,000
Accumulated deficit				(1,327,644,000)	(1,251,023,000)		$ (801,632,000)
Debt instrument face amount						$ 4,600,000			$ 25,000,000
Restricted cash				71,000	70,000
Impairment of right of use asset				0	3,000,000
Impairment loss				0	30,600,000
Impairment loss related to property plant and equipment				$ 0	$ 2,700,000
Impairment, Long-Lived Asset, Held-for-Use, Statement of Income or Comprehensive Income [Extensible Enumeration]				Asset Impairment Charges	Asset Impairment Charges
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill)				$ 0	$ 24,800,000
Impairment, Intangible Asset, Indefinite-Lived (Excluding Goodwill), Statement of Income or Comprehensive Income [Extensible Enumeration]				Asset Impairment Charges	Asset Impairment Charges
Assets held for sale				$ 0	$ 200,000
Common Stock, Shares, Outstanding				6,510,527	6,403,289
Loyalty liability totaled				$ 1,100,000	$ 100,000
iAnthus Capital Management LLC ICM [Member]
Impairment of right of use asset					100,000
Impairment loss					700,000
Impairment loss related to property plant and equipment					100,000
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill)				0	600,000
GreenMart Of Nevada NLV LLC GMNV [Member]
Impairment of right of use asset					3,000,000
Impairment loss related to property plant and equipment					2,700,000
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill)					24,100,000
Property, Plant and Equipment [Member] \| GreenMart Of Nevada NLV LLC GMNV [Member]
Impairment loss				0	29,900,000
Right Of Use Asset [Member] \| GreenMart Of Nevada NLV LLC GMNV [Member]
Impairment loss				0	29,900,000
Finite-Lived Intangible Assets [Member] \| iAnthus Capital Management LLC ICM [Member]
Impairment loss	$ 700,000
Finite-Lived Intangible Assets [Member] \| GreenMart Of Nevada NLV LLC GMNV [Member]
Impairment loss				$ 0	$ 29,900,000
License [Member]
Useful life of intangible assets				15 years
Minimum [Member] \| Trademarks [Member]
Useful life of intangible assets				7 years
Minimum [Member] \| Other Intangible Assets [Member]
Useful life of intangible assets				1 year
Maximum [Member] \| Trademarks [Member]
Useful life of intangible assets				15 years
Maximum [Member] \| Other Intangible Assets [Member]
Useful life of intangible assets				5 years
Recapitalization Transaction [Member]
Stock issued during period, shares, new issues			6,072,580
Percentage of outstanding shares Held			2.75%
Common Stock, Shares, Outstanding			6,244,298
Debt conversion, original debt, amount			$ 5,000,000
Recapitalization Transaction [Member] \| Existing Shareholders [Member]
Common Stock, Shares, Outstanding			171,718
Secured Debt [Member] \| Secured Lenders [Member] \| Secured Debenture Purchase Agreement [Member]
Debt instrument face amount			$ 99.7
Interest rate on secured notes			8.00%
Debt instrument maturity date			Jun. 24, 2027
Debt instrument, interest rate			8.00%
Debt instrument interest percentage on event of default			11.00%
Debt instrument, redemption price, percentage of principal amount redeemed			103.00%
Percentage of total outstanding debt instrument principal amount			90.00%
Secured Debt [Member] \| Gotham Green Partners, LLC and Affiliates [Member] \| Secured Debenture Purchase Agreement [Member]
Percentage of outstanding shares Held			50.00%
Maximum threshold remuneration payable to director			$ 25,000
Secured Debt [Member] \| Recapitalization Transaction [Member]
Interest rate on secured notes			13.00%
Debt conversion, original debt, amount			$ 99,700,000
Debt instrument maturity date			Jul. 13, 2025
Secured Debt [Member] \| Recapitalization Transaction [Member] \| Secured Lenders [Member]
Stock issued during period, shares, new issues			3,036,290
Percentage of outstanding shares Held			48.625%
Secured Debt [Member] \| Recapitalization Transaction [Member] \| Maximum [Member]
Debt conversion, original debt, amount			$ 14,700,000
Unsecured Debt [Member] \| UnSecured Debenture Purchase Agreement [Member]
Debt instrument face amount			$ 20,000,000
Debt instrument maturity date			Jun. 24, 2027
Debt instrument, interest rate			8.00%
Debt instrument interest percentage on event of default			11.00%
Debt instrument, redemption price, percentage of principal amount redeemed			103.00%
Percentage of total outstanding debt instrument principal amount			90.00%
Unsecured Debt [Member] \| Secured Lenders [Member] \| UnSecured Debenture Purchase Agreement [Member]
Debt instrument face amount			$ 5,000,000
Unsecured Debt [Member] \| Unsecured Lenders [Member] \| UnSecured Debenture Purchase Agreement [Member]
Debt instrument face amount			$ 15,000,000
Unsecured Debt [Member] \| Recapitalization Transaction [Member]
Interest rate on secured notes			8.00%
Debt conversion, original debt, amount			$ 15,000,000
Unsecured Debt [Member] \| Recapitalization Transaction [Member] \| Unsecured Lenders [Member]
Stock issued during period, shares, new issues			3,036,290
Percentage of outstanding shares Held			48.625%
Senior Secured Bridge Notes [Member] \| I Anthus New Jersey LLC [Member]
Debt instrument face amount								$ 11,000,000
Debt instrument maturity date		Feb. 02, 2021
New Jersey Senior Secured Bridge Notes [Member]
Percentage of outstanding shares Held			5.00%
New Jersey Senior Secured Bridge Notes [Member] \| I Anthus New Jersey LLC [Member]
Debt instrument face amount		$ 1,400,000						$ 11,000,000
Interest rate on secured notes								14.00%
Debt instrument maturity date		Feb. 02, 2024
Debt instrument, interest rate		12.00%
Percentage of total outstanding debt instrument principal amount		10.00%
Additional Secured Debentures [Member] \| Secured Debenture Purchase Agreement [Member]
Debt instrument face amount			$ 25,000,000