INVESTMENTS (Details) - USD ($) $ in Thousands	Jun. 30, 2026	Dec. 31, 2025
Available-for-sale
Amortized Cost	$ 2,014,061	$ 1,163,152
Gross Unrealized Holding Gains	1	1,261
Gross Unrealized Holding Losses	5,916
Fair Value	2,008,146	1,164,413
Continuous Unrealized Loss Position less than 12 Months	5,916
Short-term \| Commercial paper
Available-for-sale
Amortized Cost	174,270	90,418
Gross Unrealized Holding Gains	1	1
Fair Value	174,271	90,419
Short-term \| Municipal securities
Available-for-sale
Amortized Cost	3,107	674
Gross Unrealized Holding Gains		1
Gross Unrealized Holding Losses	5
Fair Value	3,102	675
Continuous Unrealized Loss Position less than 12 Months	5
Short-term \| U.S. government agency securities
Available-for-sale
Amortized Cost	62,316
Gross Unrealized Holding Losses	53
Fair Value	62,263
Continuous Unrealized Loss Position less than 12 Months	53
Short-term \| U.S. treasuries
Available-for-sale
Amortized Cost	653,881	489,007
Gross Unrealized Holding Gains		492
Gross Unrealized Holding Losses	907
Fair Value	652,974	489,499
Continuous Unrealized Loss Position less than 12 Months	907
Short-term \| Certificates of deposit
Available-for-sale
Amortized Cost		12,728
Fair Value		12,728
Short-term \| Corporate bonds
Available-for-sale
Amortized Cost	334,849	83,639
Gross Unrealized Holding Gains		124
Gross Unrealized Holding Losses	627
Fair Value	334,222	83,763
Continuous Unrealized Loss Position less than 12 Months	627
Long-term \| Municipal securities
Available-for-sale
Amortized Cost	593	1,206
Gross Unrealized Holding Gains		1
Gross Unrealized Holding Losses	4
Fair Value	589	1,207
Continuous Unrealized Loss Position less than 12 Months	4
Long-term \| U.S. government agency securities
Available-for-sale
Amortized Cost	42,124
Gross Unrealized Holding Losses	289
Fair Value	41,835
Continuous Unrealized Loss Position less than 12 Months	289
Long-term \| U.S. treasuries
Available-for-sale
Amortized Cost	468,616	259,613
Gross Unrealized Holding Gains		353
Gross Unrealized Holding Losses	2,664
Fair Value	465,952	259,966
Continuous Unrealized Loss Position less than 12 Months	2,664
Long-term \| Corporate bonds
Available-for-sale
Amortized Cost	274,305	225,867
Gross Unrealized Holding Gains		289
Gross Unrealized Holding Losses	1,367
Fair Value	272,938	$ 226,156
Continuous Unrealized Loss Position less than 12 Months	$ 1,367

Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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