Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Statement of Financial Position [Abstract]
Related party, receivable from collaboration partners	$ 744,535	$ 943
Related party, deferred revenue - current	96,981	67,571
Related party, deferred revenue - noncurrent	$ 462,217	$ 127,511
Preferred stock, par value	$ 0.0001	$ 0.0001
Preferred stock, shares authorized	10,000,000	10,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value	$ 0.0001	$ 0.0001
Common stock, shares authorized	400,000,000	400,000,000
Common stock, shares issued	70,781,736	65,114,685
Common stock, shares outstanding	70,781,736	65,114,685
Common stock, shares outstanding includes shares issued but subject to vesting	9,946	1,422,784