Annual report pursuant to Section 13 and 15(d)

Summary of Significant Accounting Policies - Additional Information (Detail)

v3.24.1
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