Marketable Securities - Investments In Marketable Securities (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Debt Securities, Available-for-sale [Line Items]
Short-term marketable securities, amortized cost basis	$ 299,887	$ 275,754
Short-term marketable securities, gross unrealized losses	(2,256)	(414)
Short-term marketable securities, fair value	297,631	275,340
Long-term marketable securities, amortized cost basis		64,596
Long-term marketable securities, gross unrealized losses		(200)
Long-term marketable securities, fair value		64,396
U.S. Treasury notes
Debt Securities, Available-for-sale [Line Items]
Short-term marketable securities, amortized cost basis	162,238	226,136
Short-term marketable securities, gross unrealized losses	(800)	(344)
Short-term marketable securities, fair value	161,438	225,792
U.S. Government-sponsored enterprise securities
Debt Securities, Available-for-sale [Line Items]
Short-term marketable securities, amortized cost basis	137,649	49,618
Short-term marketable securities, gross unrealized losses	(1,456)	(70)
Short-term marketable securities, fair value	$ 136,193	49,548
Long-term marketable securities, amortized cost basis		64,596
Long-term marketable securities, gross unrealized losses		(200)
Long-term marketable securities, fair value		$ 64,396