Annual report pursuant to Section 13 and 15(d)

Consolidated Statements of Cash Flows Supplemental Information - Summary of Significant Non-Cash Investing and Financing Activities (Detail)

v3.22.0.1
Consolidated Statements of Cash Flows Supplemental Information - Summary of Significant Non-Cash Investing and Financing Activities (Detail) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Cash Flow Non Cash Investing And Financing Activities Disclosure [Line Items]    
Accrued capital expenditures $ 0 $ 256
Non-cash consideration transferred from property, plant and equipment 0 414
New Jersey Senior Secured Bridge Notes [Member] | iAnthus New Jersey LLC    
Cash Flow Non Cash Investing And Financing Activities Disclosure [Line Items]    
Non-cash consideration transferred 1,471 0
MPX Warrants [Member]    
Cash Flow Non Cash Investing And Financing Activities Disclosure [Line Items]    
Cashless exercise of MPX warrants recorded as derivatives 0 3,325
Tranche One Secured Notes [Member] | Secured Debt [Member]    
Cash Flow Non Cash Investing And Financing Activities Disclosure [Line Items]    
Non-cash consideration transferred $ 1,279 $ 565