COMMITMENTS & CONTINGENCIES - Lease Agreements (Details) $ in Millions	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2025 USD ($) ft² contract	Sep. 30, 2024 USD ($)	Sep. 30, 2025 USD ($) ft² contract	Sep. 30, 2024 USD ($)	Dec. 31, 2025 USD ($)	Dec. 31, 2024 USD ($)
Lessee, Lease, Description [Line Items]
Number of leases | contract	2		2
Square feet of office space | ft²	98,807		98,807
Lease term (in years)	10 years		10 years
Annual increase in rent (as a percent)						3.00%
Rent abatement						$ 0.7
Tenant improvement allowance						5.8
Security deposit	$ 2.6		$ 2.6			$ 2.6
Cash paid for our current lease	$ 0.2	$ 0.2	$ 0.6	$ 0.6
Forecast
Lessee, Lease, Description [Line Items]
Base rent expense					$ 2.5