Stockholders' Equity - Schedule of Changes in Stockholders Equity (Detail) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022
Class Of Stock [Line Items]
Beginning balance	$ 1,235,584	$ 1,040,244	$ 1,040,244
Beginning balance, shares	87,103,007
Exercise of stock options		8,435
Exercise of stock options, shares	48,353
Equity-based compensation		18,491
Other comprehensive loss - unrealized loss on marketable securities		(5,128)
Other comprehensive gain (loss) from equity method investment	$ 1,794	(302)
Net loss	(103,126)	(146,872)
Ending balance	$ 1,190,843	953,754	$ 1,235,584
Ending balance, shares	88,095,779		87,103,007
At The Market Offerings [Member]
Class Of Stock [Line Items]
Beginning balance	$ 1,235,584
Issuance of common stock	1,466	38,886
Contingent consideration paid to Rewrite holders	24,126
Exercise of stock options	755
Equity-based compensation	27,255
Other comprehensive loss - unrealized loss on marketable securities	2,989
Other comprehensive gain (loss) from equity method investment	1,794
Ending balance	1,190,843		$ 1,235,584
Common Stock [Member]
Class Of Stock [Line Items]
Beginning balance	$ 9	$ 7	$ 7
Beginning balance, shares	87,103,007	74,485,883	74,485,883
Contingent consideration paid to Rewrite holders	$ 567,045
Exercise of stock options, shares	48,353	503,830
Vesting of restricted stock units, shares	342,025	54,666
Ending balance	$ 9	$ 8	$ 9
Ending balance, shares	88,095,779	75,624,167	87,103,007
Common Stock [Member] | At The Market Offerings [Member]
Class Of Stock [Line Items]
Issuance of common stock		$ 1
Number of stock additionally invested	35,349	579,788
Additional Paid-In Capital [Member]
Class Of Stock [Line Items]
Beginning balance	$ 2,420,223	$ 1,745,870	$ 1,745,870
Issuance of common stock	1,466
Contingent consideration paid to Rewrite holders	24,126
Exercise of stock options	755	8,435
Equity-based compensation	27,255	18,491
Ending balance	2,473,825	1,811,681	2,420,223
Additional Paid-In Capital [Member] | At The Market Offerings [Member]
Class Of Stock [Line Items]
Issuance of common stock		38,885
Accumulated Other Comprehensive Loss [Member]
Class Of Stock [Line Items]
Beginning balance	7,461	(2,632)	(2,632)
Other comprehensive loss - unrealized loss on marketable securities	2,989	(5,128)
Other comprehensive gain (loss) from equity method investment	1,794	(302)
Ending balance	(2,678)	(8,062)	7,461
Accumulated Deficit [Member]
Class Of Stock [Line Items]
Beginning balance	(1,177,187)	(703,001)	(703,001)
Net loss	(103,126)	(146,872)
Ending balance	(1,280,313)	$ (849,873)	$ (1,177,187)
Accumulated Deficit [Member] | At The Market Offerings [Member]
Class Of Stock [Line Items]
Net loss	$ (103,126)