Income Taxes, Reconciliation of Statutory to Effective Tax Rate (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Reconciliation Between Effective and Statutory Tax Rate [Abstract]
Pre-tax income (loss)	$ (333,965)	$ (257,985)	$ (29,148)
Statutory rate	(70,133)	(54,177)	(6,121)
State income tax net of federal benefit	(22,597)	(13,622)	4,278
Foreign	(22)	(49)	143
Net change in valuation allowance	175,388	104,951	2,885
Loss on debt transactions	0	0	262
Tax credits	(67,131)	(39,729)	(23,198)
Deferred tax true-up	4	(20)	(24)
Tax rate change	1,023	(3,091)	12,838
Non-deductible compensation	3,814	3,023	5,085
Other non-deductible items	327	57	84
Foreign-derived intangible income benefit	(7,493)	0	0
Stock-based compensation	19,546	14,030	4,720
Other	(405)	364	(1,503)
Total income tax expense (benefit)	$ 32,321	$ 11,737	$ (551)
Reconciliation Between Effective and Statutory Tax Rate Percentage [Abstract]
Statutory rate	21.00%	21.00%	21.00%
State income tax net of federal benefit	6.80%	5.30%	(14.70%)
Foreign	0.00%	0.00%	(0.50%)
Net change in valuation allowance	(52.50%)	(40.70%)	(9.90%)
Loss on debt transactions	0.00%	0.00%	(0.90%)
Tax credits	20.10%	15.40%	79.60%
Deferred tax true-up	0.00%	0.00%	0.10%
Tax rate change	(0.30%)	1.20%	(44.00%)
Non-deductible compensation	(1.10%)	(1.20%)	(17.40%)
Other non-deductible items	(0.10%)	0.00%	(0.30%)
Foreign-derived intangible income benefit	2.20%	0.00%	0.00%
Stock-based compensation	(5.90%)	(5.40%)	(16.20%)
Other	0.10%	(0.10%)	5.10%
Effective rate	(9.70%)	(4.50%)	1.90%