Income Taxes - Analysis of Deferred Tax Assets and Liabilities (Detail) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Deferred tax assets:
Net operating loss carryforwards	$ 154,948	$ 241,826
Difference in depreciation and amortization	36,611	39,725
Research and development tax credits	374,017	261,067
Stock-based compensation	94,452	80,193
Lease liabilities	33,792	11,782
Capitalized inventory	35,269	33,366
Debt discount	25,597	35,975
Capitalized research and development costs	106,534	74,886
Other	50,308	44,022
Total deferred tax assets	911,528	822,842
Deferred tax liabilities:
Right of use asset	(25,800)	(9,174)
Debt discount	0	0
Total deferred tax liabilities	(25,800)	(9,174)
Valuation allowance	(883,665)	(811,908)
Net deferred tax assets	$ 2,063	$ 1,760