K2 WARRANT AND AMENDMENT WARRANT - Fair value assumptions (Details) $ in Millions	Dec. 31, 2024 USD ($) $ / shares Y
K2 Warrant
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair value of warrants issued | $	$ 0.4
K2 Warrant | Stock price
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Warrants, measurement input	1.41
K2 Warrant | Strike price
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Warrants, measurement input	1.32
K2 Warrant | Volatility (annual)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Warrants, measurement input	75.3
K2 Warrant | Risk-free rate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Warrants, measurement input	2.74
K2 Warrant | Estimated time to expiration (years)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Warrants, measurement input | Y	10
Amendment Warrant
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair value of warrants issued | $	$ 0.3
Amendment Warrant | Stock price
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Warrants, measurement input	5.01
Amendment Warrant | Strike price
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Warrants, measurement input	2.72
Amendment Warrant | Volatility (annual)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Warrants, measurement input	105
Amendment Warrant | Risk-free rate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Warrants, measurement input	4.1
Amendment Warrant | Estimated time to expiration (years)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Warrants, measurement input | Y	10