Condensed Consolidated Statements of Operations (unaudited) - USD ($) shares in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Income Statement [Abstract]
Revenue	$ 359,429,000	$ 7,753,000
Cost of revenue	74,075,000	4,057,000
Gross profit	285,354,000	3,696,000
Operating expenses:
Research and development	5,422,000	1,978,000
Selling and marketing	5,008,000	1,597,000
General and administrative	8,002,000	2,035,000
Total operating expenses	18,432,000	5,610,000
Operating income (loss)	266,922,000	(1,914,000)
Interest and other income, net	282,000	241,000
Income (loss) before income taxes and equity loss in investee	267,204,000	(1,673,000)
Provision for income taxes	66,513,000	34,000
Income (loss) before equity loss in investee	200,691,000	(1,707,000)
Equity loss in investee		(249,000)
Net income (loss)	$ 200,691,000	$ (1,956,000)
Net income (loss) per common share:
Basic	$ 6.96	$ (0.09)
Diluted	$ 6.52	$ (0.09)
Weighted-average common shares:
Basic	28,831	21,566
Diluted	30,770	21,566