SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Summary of Fair Value (Details) - USD ($) $ in Thousands	Jun. 30, 2026	Dec. 31, 2025
Assets
Cash equivalents	$ 285,303	$ 84,627
Short-term investments	105,091	35,524
Available-for-sale debt securities	10,684	9,703
Total assets	401,078	129,854
Quoted Prices in Active Markets for Identical Assets (Level 1)
Assets
Cash equivalents	285,303	84,627
Short-term investments	105,091	35,524
Available-for-sale debt securities	0	0
Total assets	390,394	120,151
Significant Other Observable Inputs (Level 2)
Assets
Cash equivalents	0	0
Short-term investments	0	0
Available-for-sale debt securities	0	0
Total assets	0	0
Significant Unobservable Inputs (Level 3)
Assets
Cash equivalents	0	0
Short-term investments	0	0
Available-for-sale debt securities	10,684	9,703
Total assets	$ 10,684	$ 9,703