v3.26.3
INVESTMENTS AND FAIR VALUE MEASUREMENTS - Funds Held For Clients (Details) - USD ($)
$ in Thousands
Sep. 30, 2026
Dec. 31, 2025
Sep. 30, 2025
Fair Value Disclosures [Abstract]      
Restricted cash and cash equivalents held to satisfy client funds obligations $ 101,742 $ 139,459 $ 63,947
Restricted short-term marketable securities held to satisfy client funds obligations 21,247 12,781  
Restricted long-term marketable securities held to satisfy client funds obligations 71,757 75,871  
Total funds held for clients $ 194,746 $ 228,111