INCOME TAXES - Provision for income taxes (Details) - USD ($)	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
INCOME. TAXES.
Loss before income taxes, as reported in the consolidated statements of operations	$ (198,335,000)	$ (348,101,000)	$ (279,381)
Computed "expected" tax benefit	(41,650,000)	(73,101,000)	(58,670)
Increase (decrease) in income taxes resulting from:
Expected benefit from state and local taxes	(7,242,000)	(3,445,000)	(10,801)
Research and development credits	(6,389,000)	(8,337,000)	(5,265)
Officer Compensation Limitation	4,391,000	439,000
Other	374,000	428,000	1,065
Stock awards	17,599,000	(6,726,000)	(1,558)
Enactment of federal tax reform	0	0	(14,763)
Change in the balance of the valuation allowance for deferred tax assets	32,917,000	90,742,000	89,992
Income Tax Expense (Benefit)	$ 0	$ 0	$ 0