Financial Instruments and Risk Management - Key Inputs and Assumptions Used in Black Scholes Simulation Model (Details)	3 Months Ended		12 Months Ended
	Mar. 31, 2025 USD ($) $ / shares	Mar. 31, 2024	Dec. 31, 2024 USD ($) $ / shares
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Common Stock Price of TerrAscend Corp.	$ 0.48		$ 0.65
Option exercise price	$ 1.33		$ 1.33
Annual volatility	115.40%		106.60%
Annual risk-free rate	4.23%		4.24%
Expected term (in years)	9 months 21 days	10 years 3 days	1 year 18 days
Minimum
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Expected term (in years)	5 years 25 days
Maximum
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Expected term (in years)	6 years 3 months
Detachable Warrants
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Common Stock Price of TerrAscend Corp. | $	0.48		0.65
Option exercise price	$ 1.95		$ 1.95
Annual volatility	111.50%		107.50%
Annual risk-free rate	4.32%		4.24%
Expected term (in years)	2 months 23 days		5 months 23 days
Bifurcated Conversion Options
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Common Stock Price of TerrAscend Corp.	$ 0.48		$ 0.65
Option exercise price	$ 2.01		$ 2.01
Annual volatility	99.00%		86.90%
Annual risk-free rate	4.03%		4.25%
Bifurcated Conversion Options | Minimum
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Expected term (in years)	1 year 2 months 23 days		1 year 5 months 23 days
Bifurcated Conversion Options | Maximum
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Expected term (in years)	1 year 4 months 2 days		1 year 7 months 2 days