Annual report [Section 13 and 15(d), not S-K Item 405]

Long-Term Debt - Additional Information (Detail)

v3.26.1
Long-Term Debt - Additional Information (Detail)
 12 Months Ended
Feb. 16, 2024
USD ($)
Days
Feb. 02, 2023
USD ($)
Jun. 24, 2022
USD ($)
Feb. 02, 2021
USD ($)
Dec. 31, 2025
USD ($)
Dec. 31, 2024
USD ($)
Feb. 16, 2026
Debt Instrument [Line Items]              
Interest expense         $ 16,602,000 $ 17,173,000  
Accretion expense         4,889,000 4,624,000  
Secured debt long term fair value         186,489,000 170,148,000  
Percentage of total outstanding debt instrument principal amount             8.40%
Debt instrument, loss on extinguishment of debt         0 (114,000)  
Debt issuance costs, net         21,900,000 21,900,000  
Debt instrument, unamortized discount costs         6,500,000 11,400,000  
June Secured Debentures [Member]              
Debt Instrument [Line Items]              
Debt instrument face value     $ 99,700,000        
Debt instrument maturity date     Jun. 24, 2027        
Interest expense         10,200,000 9,400,000  
Accretion expense         3,100,000 3,000,000  
Secured debt long term fair value     $ 84,500,000   154,569,000 134,096,000  
June Unsecured Debentures [Member]              
Debt Instrument [Line Items]              
Debt instrument face value     $ 20,000,000        
Debt instrument maturity date     Jun. 24, 2027        
Interest expense         2,000,000 1,900,000  
Accretion expense         1,100,000 1,000,000  
Secured debt long term fair value     $ 14,900,000        
Additional Secured Debentures [Member]              
Debt Instrument [Line Items]              
Interest expense         $ 2,600,000 2,400,000  
Secured debt long term fair value     $ 25,000,000        
Minimum [Member] | June Secured Debentures [Member]              
Debt Instrument [Line Items]              
Debt instrument interest rate stated percentage     8.00%        
Minimum [Member] | June Unsecured Debentures [Member]              
Debt Instrument [Line Items]              
Debt instrument interest rate stated percentage     8.00%        
Maximum [Member] | June Secured Debentures [Member]              
Debt Instrument [Line Items]              
Debt instrument interest percentage on event of default     11.00%        
Maximum [Member] | June Unsecured Debentures [Member]              
Debt Instrument [Line Items]              
Debt instrument interest percentage on event of default     11.00%        
I Anthus New Jersey LLC [Member]              
Debt Instrument [Line Items]              
Description about qualified financing         Qualified Financing” means a transaction or series of related transactions resulting in net proceeds to the ICH of not less than $10 million from the subscription of the ICH's securities, including, but not limited to, a private placement or rights offering.    
Secured Debenture Purchase Agreement [Member] | Additional Secured Debentures [Member]              
Debt Instrument [Line Items]              
Debt instrument face value     $ 25,000,000        
Debt instrument maturity date     Jun. 24, 2027        
Secured Debenture Purchase Agreement [Member] | Minimum [Member] | Additional Secured Debentures [Member]              
Debt Instrument [Line Items]              
Debt instrument interest rate stated percentage     8.00%        
Secured Debenture Purchase Agreement [Member] | Maximum [Member] | Additional Secured Debentures [Member]              
Debt Instrument [Line Items]              
Debt instrument interest percentage on event of default     11.00%        
Long Term Debt [Member]              
Debt Instrument [Line Items]              
Interest accrued on current and long term debt         $ 1,500,000 1,500,000  
New Jersey Senior Secured Bridge Notes [Member]              
Debt Instrument [Line Items]              
Percentage of outstanding shares Held     5.00%        
New Jersey Senior Secured Bridge Notes [Member] | I Anthus New Jersey LLC [Member]              
Debt Instrument [Line Items]              
Debt instrument face value   $ 1,400,000   $ 11,000,000      
Debt instrument maturity date   Feb. 02, 2024   Feb. 02, 2023      
Interest rate on secured notes       14.00%      
Interest expense         1,400,000 1,900,000  
Accretion expense         700,000 600,000  
Secured debt long term fair value $ 14,300,000            
Threshold limit of qualified financing, net proceeds not less than the subscription of securities         10,000,000    
Percentage of total outstanding debt instrument principal amount   10.00%          
Debt instrument interest rate stated percentage   12.00%          
New Jersey Senior Secured Bridge Notes [Member] | I Anthus New Jersey LLC [Member] | Two Thousand Twenty Four New Jersey Amendment [Member]              
Debt Instrument [Line Items]              
Debt instrument face value $ 1,600,000            
Non Operational Cash Receipts, Utilization Rate 25.00%            
Payment towards Principal Amount Outstanding $ 5,000,000            
Non-Operational Cash Receipts         7,400,000 0  
Debt Instrument, Maturity Date Range, Start Feb. 16, 2024            
Debt Instrument Extended Maturity Date Feb. 16, 2026            
Percentage of total outstanding debt instrument principal amount 10.00%            
Debt instrument interest rate stated percentage 12.00%            
Debt Instrument, Convertible, Threshold Trading Days | Days 20            
Debt Instrument, Date of First Required Payment May 16, 2024            
Debt instrument, loss on extinguishment of debt         $ 0 $ 100,000  
New Jersey Senior Secured Bridge Notes [Member] | Prospective Recapitalization Transaction [Member] | I Anthus New Jersey LLC [Member]              
Debt Instrument [Line Items]              
Interest rate on secured notes       8.00%      
New Jersey Senior Secured Bridge Notes [Member] | Prospective Default [Member] | I Anthus New Jersey LLC [Member]              
Debt Instrument [Line Items]              
Interest rate on secured notes       25.00%