MARKETABLE SECURITIES - Available for Sale (Details) - USD ($) $ in Thousands	Mar. 31, 2025	Dec. 31, 2024
Short-term AFS securities
Amortized cost, short-term AFS securities	$ 338,696	$ 365,600
Gross unrealized gains, short-term AFS securities	817	926
Gross unrealized losses, short-term AFS securities	(36)	(52)
Fair value, short-term AFS securities	339,477	366,474
Long-term AFS securities
Amortized cost, long-term AFS securities	378,896	345,708
Gross unrealized gains, long-term AFS securities	1,527	802
Gross unrealized losses, long-term AFS securities	(174)	(564)
Fair value, long-term AFS securities	380,249	345,946
Corporate debt securities
Short-term AFS securities
Amortized cost, short-term AFS securities	191,274	153,988
Gross unrealized gains, short-term AFS securities	571	415
Gross unrealized losses, short-term AFS securities	(15)	(28)
Fair value, short-term AFS securities	191,830	154,375
Long-term AFS securities
Amortized cost, long-term AFS securities	159,414	190,772
Gross unrealized gains, long-term AFS securities	595	544
Gross unrealized losses, long-term AFS securities	(109)	(303)
Fair value, long-term AFS securities	159,900	191,013
U.S. Treasury securities
Short-term AFS securities
Amortized cost, short-term AFS securities	141,026	203,238
Gross unrealized gains, short-term AFS securities	246	511
Gross unrealized losses, short-term AFS securities	(20)	(20)
Fair value, short-term AFS securities	141,252	203,729
Long-term AFS securities
Amortized cost, long-term AFS securities	219,482	154,936
Gross unrealized gains, long-term AFS securities	932	258
Gross unrealized losses, long-term AFS securities	(65)	(261)
Fair value, long-term AFS securities	220,349	154,933
Certificates of deposit
Short-term AFS securities
Amortized cost, short-term AFS securities	4,400	4,400
Gross unrealized gains, short-term AFS securities	0	0
Gross unrealized losses, short-term AFS securities	0	0
Fair value, short-term AFS securities	4,400	4,400
U.S. governmental agency securities
Short-term AFS securities
Amortized cost, short-term AFS securities	1,996	3,974
Gross unrealized gains, short-term AFS securities	0	0
Gross unrealized losses, short-term AFS securities	(1)	(4)
Fair value, short-term AFS securities	$ 1,995	$ 3,970