SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Fair Value Measurement on Recurring Basis (Details) - Recurring - USD ($) $ in Millions	Dec. 31, 2025	Dec. 31, 2024
Level 1 Fair Value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value disclosure	$ 42.6	$ 31.1
Level 1 Fair Value | Mutual funds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value disclosure	42.6	31.1
Level 2 Fair Value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value disclosure	2.1	0.3
Level 2 Fair Value | Money market mutual fund
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value disclosure	$ 2.1	$ 0.3