CONDENSED FINANCIAL INFORMATION - CONDENSED STATEMENTS OF CASH FLOWS (Details) - USD ($) $ in Thousands		12 Months Ended
	Jul. 09, 2021	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
CASH FLOWS FROM OPERATING ACTIVITIES:
Net loss		$ (275,000)	$ (1,353,000)	$ (662,000)
Adjustments to reconcile net loss to cash, cash equivalents, and restricted cash provided by (used in) operating activities:
Depreciation and amortization		65,000	83,000	47,000
Warrant fair value adjustment		0	0	(12,000)
Gain on early extinguishment of debt		(225,000)	0	0
Interest payable		(10,000)	2,000	4,000
Other assets		(19,000)	37,000	(52,000)
Net cash provided by (used in) operating activities		2,344,000	730,000	(5,794,000)
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchase of intangible assets		0	0	(1,000)
Capital returns from non-marketable equity securities		0	3,000	0
Net cash provided by (used in) investing activities		44,000	234,000	(476,000)
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from issuance of convertible senior notes, net of issuance costs		0	0	953,000
Repurchase of convertible senior notes		(362,000)	0	0
Purchase of capped calls related to convertible senior notes		0	0	(119,000)
Proceeds from exercise of stock options		3,000	4,000	15,000
Proceeds from issuance of common stock for ESPP		2,000	2,000	0
Proceeds from warrant exercise	$ 22,000	0	0	22,000
Proceeds from the February 2021 Offering		0	0	886,000
Net cash (used in) provided by financing activities		(2,639,000)	(1,751,000)	7,342,000
NET (DECREASE) INCREASE IN CASH, CASH EQUIVALENTS, AND RESTRICTED CASH		(251,000)	(787,000)	1,072,000
CASH, CASH EQUIVALENTS, AND RESTRICTED CASH – Beginning of year		1,791,000	2,578,000	1,506,000
CASH, CASH EQUIVALENTS, AND RESTRICTED CASH – End of year		1,540,000	1,791,000	2,578,000
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION – Cash paid during the period for interest		203,000	355,000	122,000
DISCLOSURES OF NONCASH FINANCING ACTIVITIES:
Issuance of common stock in extinguishment of warrant liabilities		0	0	(35,000)
Parent Company
CASH FLOWS FROM OPERATING ACTIVITIES:
Net loss		(275,000)	(1,353,000)	(662,000)
Adjustments to reconcile net loss to cash, cash equivalents, and restricted cash provided by (used in) operating activities:
Earnings of subsidiaries		487,000	1,338,000	665,000
Depreciation and amortization		3,000	7,000	2,000
Warrant fair value adjustment		0	0	(12,000)
Interest payable		(1,000)	0	1,000
Other assets		2,000	(2,000)	0
Net cash provided by (used in) operating activities		(9,000)	(10,000)	(6,000)
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchase of intangible assets		0	0	(1,000)
Payments to Acquire Interest in Subsidiaries and Affiliates		(4,000)	(6,000)	(1,860,000)
Capital returns from non-marketable equity securities		370,000	10,000	139,000
Net cash provided by (used in) investing activities		366,000	4,000	(1,722,000)
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from issuance of convertible senior notes, net of issuance costs		0	0	953,000
Purchase of capped calls related to convertible senior notes		0	0	(119,000)
Proceeds from exercise of stock options		3,000	4,000	15,000
Proceeds from issuance of common stock for ESPP		2,000	2,000	0
Proceeds from warrant exercise		0	0	22,000
Proceeds from the February 2021 Offering		0	0	886,000
Issuance cost of common stock		0	0	(29,000)
Net cash (used in) provided by financing activities		(357,000)	6,000	1,728,000
NET (DECREASE) INCREASE IN CASH, CASH EQUIVALENTS, AND RESTRICTED CASH		0	0	0
CASH, CASH EQUIVALENTS, AND RESTRICTED CASH – Beginning of year		0	0
CASH, CASH EQUIVALENTS, AND RESTRICTED CASH – End of year		0	0	0
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION – Cash paid during the period for interest		3,000	2,000	0
DISCLOSURES OF NONCASH FINANCING ACTIVITIES:
Recognition of warrant liability		0	0	0
Issuance of common stock in extinguishment of warrant liabilities		$ 0	$ 0	$ (35,000)