Financial Instruments - Investments in Debt and Marketable Equity Securities Disclosure (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022	Sep. 30, 2022	Dec. 31, 2021
Cost or Amortized Cost
Cash and cash equivalents, at carrying value	$ 125,803	$ 232,200	$ 345,871	$ 571,384
Restricted cash	1,414	2,406	2,562	5,244
Cash, cash equivalents, and restricted cash:
Cash, cash equivalents, and restrict cash balance	127,217	242,246	$ 403,716	$ 718,281
Fair Value, Measurements, Recurring
Cost or Amortized Cost
Restricted cash	1,414	2,406
Cash, cash equivalents, and available-for-sale debt securities, amortized cost	174,556	394,715
Unrealized Gains (Losses)
Unrealized Gains	6	28
Unrealized Losses	(119)	(758)
Estimated Fair Value
Cash equivalents	91,399	186,410
Cash, cash equivalents, and available-for-sale debt securities	174,443	393,985
Cash, cash equivalents, and restricted cash:
Cash, cash equivalents, and restrict cash balance	127,217	234,606
Long-term Investments
Debt Securities, Available-for-Sale, Excluding Accrued Interest, Noncurrent	5,474	29,480
Debt Securities, Available-for-Sale, Excluding Accrued Interest, Current	41,752	122,259
U.S. treasury securities | Fair Value, Measurements, Recurring
Cost or Amortized Cost
Debt securities, available for sale, estimated fair value	13,823	126,405
Unrealized Gains (Losses)
Unrealized Gains	6	28
Unrealized Losses	(59)	(753)
Estimated Fair Value
Debt securities, available-for-sale, amortized cost	13,876	127,130
Long-term Investments
Debt Securities, Available-for-Sale, Excluding Accrued Interest, Noncurrent	5,474	29,480
Debt Securities, Available-for-Sale, Excluding Accrued Interest, Current	8,349	96,925
Agency bonds | Fair Value, Measurements, Recurring
Cost or Amortized Cost
Debt securities, available for sale, estimated fair value	33,403	25,334
Unrealized Gains (Losses)
Unrealized Gains	0	0
Unrealized Losses	(60)	(5)
Estimated Fair Value
Debt securities, available-for-sale, amortized cost	33,463	25,339
Long-term Investments
Debt Securities, Available-for-Sale, Excluding Accrued Interest, Noncurrent	0	0
Debt Securities, Available-for-Sale, Excluding Accrued Interest, Current	33,403	25,334
Cash | Fair Value, Measurements, Recurring
Cost or Amortized Cost
Cash and cash equivalents, at carrying value	34,404	53,430
Estimated Fair Value
Cash equivalents	34,404	53,430
Cash, cash equivalents, and restricted cash:
Cash, cash equivalents, and restrict cash balance	34,404	45,790
Money markets funds | Fair Value, Measurements, Recurring
Cost or Amortized Cost
Cash and cash equivalents, at carrying value	91,399	186,410
Estimated Fair Value
Cash equivalents	91,399	186,410
Cash, cash equivalents, and restricted cash:
Cash, cash equivalents, and restrict cash balance	$ 91,399	$ 186,410