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Cash, Cash Equivalents and Investments (Details) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Restricted Cash and Cash Equivalents Items [Line Items] |  |  |
Amortized Cost | $ 1,183,222 | $ 492,350 |
Gross Unrealized Gains | 57 | 5 |
Gross Unrealized Losses | (52,379) | (18,101) |
Fair Value | 1,130,900 | 474,254 |
Cash and Cash Equivalents | 353,684 | 356,332 |
Marketable Securities | 39,240 | 72,180 |
Short-Term Investments |  | 14,510 |
Long-Term Investments | 156,207 | 31,232 |
Cash and cash equivalents | 353,684 | 356,332 | $ 155,440
Short-term investments | 581,769 | 14,510 |
Long-term investments | 156,207 | 31,232 |
Marketable securities, unrealized gain (loss) | (32,900) |  |
Carrying amount of held-to-maturity securities sold |  | 165,400 |
Debt securities, available-for-sale, unrealized Loss | 349,600 |  |
Common stock | Share Purchase Agreement with CLBT |  |  |
Restricted Cash and Cash Equivalents Items [Line Items] |  |  |
Marketable Securities |  | $ 90,000 |
Investment owned, shares held |  | 9,000,000 |
Fair Value, Inputs, Level 1 |  |  |
Restricted Cash and Cash Equivalents Items [Line Items] |  |  |
Amortized Cost | 378,805 | $ 103,544 |
Gross Unrealized Gains | 24 | 4 |
Gross Unrealized Losses | (51,026) | (17,820) |
Fair Value | 327,803 | 85,728 |
Cash and Cash Equivalents | 115,769 | 2,844 |
Marketable Securities | 39,240 | 72,180 |
Short-Term Investments |  | 10,704 |
Long-Term Investments | 94,367 |  |
Short-term investments | 78,427 |  |
Fair Value, Inputs, Level 2 |  |  |
Restricted Cash and Cash Equivalents Items [Line Items] |  |  |
Amortized Cost | 660,673 | 35,318 |
Gross Unrealized Gains | 33 | 1 |
Gross Unrealized Losses | (1,353) | (281) |
Fair Value | 659,353 | 35,038 |
Cash and Cash Equivalents | 94,171 |  |
Short-Term Investments |  | 3,806 |
Long-Term Investments | 61,840 | 31,232 |
Short-term investments | 503,342 |  |
Cash |  |  |
Restricted Cash and Cash Equivalents Items [Line Items] |  |  |
Amortized Cost | 143,744 | 353,488 |
Fair Value | 143,744 | 353,488 |
Cash and Cash Equivalents | 143,744 | 353,488 |
Money market funds | Fair Value, Inputs, Level 1 |  |  |
Restricted Cash and Cash Equivalents Items [Line Items] |  |  |
Amortized Cost | 2,669 | 2,844 |
Fair Value | 2,669 | 2,844 |
Cash and Cash Equivalents | 2,669 | 2,844 |
Agency bonds | Fair Value, Inputs, Level 1 |  |  |
Restricted Cash and Cash Equivalents Items [Line Items] |  |  |
Amortized Cost | 164,486 | 10,700 |
Gross Unrealized Gains | 6 | 4 |
Gross Unrealized Losses | (263) |  |
Fair Value | 164,229 | 10,704 |
Short-Term Investments |  | 10,704 |
Long-Term Investments | 94,367 |  |
Short-term investments | 69,862 |  |
Treasury bills | Fair Value, Inputs, Level 1 |  |  |
Restricted Cash and Cash Equivalents Items [Line Items] |  |  |
Amortized Cost | 121,650 |  |
Gross Unrealized Gains | 18 |  |
Gross Unrealized Losses | (3) |  |
Fair Value | 121,665 |  |
Cash and Cash Equivalents | 113,100 |  |
Short-term investments | 8,565 |  |
Marketable securities | Fair Value, Inputs, Level 1 |  |  |
Restricted Cash and Cash Equivalents Items [Line Items] |  |  |
Amortized Cost | 90,000 | 90,000 |
Gross Unrealized Losses | (50,760) | (17,820) |
Fair Value | 39,240 | 72,180 |
Marketable Securities | 39,240 | 72,180 |
State and municipal obligations | Fair Value, Inputs, Level 2 |  |  |
Restricted Cash and Cash Equivalents Items [Line Items] |  |  |
Amortized Cost | 4,980 | 2,570 |
Gross Unrealized Losses | (33) | (5) |
Fair Value | 4,947 | 2,565 |
Short-Term Investments |  | 1,400 |
Long-Term Investments |  | 1,165 |
Short-term investments | 4,947 |  |
Certificates of deposit | Fair Value, Inputs, Level 2 |  |  |
Restricted Cash and Cash Equivalents Items [Line Items] |  |  |
Amortized Cost | 5,002 |  |
Fair Value | 5,002 |  |
Short-term investments | 5,002 |  |
Term Deposit | Fair Value, Inputs, Level 2 |  |  |
Restricted Cash and Cash Equivalents Items [Line Items] |  |  |
Amortized Cost | 200,000 |  |
Fair Value | 200,000 |  |
Cash and Cash Equivalents | 25,000 |  |
Short-term investments | 175,000 |  |
Corporate bonds | Fair Value, Inputs, Level 2 |  |  |
Restricted Cash and Cash Equivalents Items [Line Items] |  |  |
Amortized Cost | 257,422 | 32,748 |
Gross Unrealized Gains | 33 | 1 |
Gross Unrealized Losses | (1,159) | (276) |
Fair Value | 256,296 | 32,473 |
Cash and Cash Equivalents | 28,883 |  |
Short-Term Investments |  | 2,406 |
Long-Term Investments | 59,339 | $ 30,067 |
Short-term investments | 168,074 |  |
Commercial paper | Fair Value, Inputs, Level 2 |  |  |
Restricted Cash and Cash Equivalents Items [Line Items] |  |  |
Amortized Cost | 160,241 |  |
Fair Value | 160,241 |  |
Cash and Cash Equivalents | 40,288 |  |
Short-term investments | 119,953 |  |
US Government Debt Securities | Fair Value, Inputs, Level 2 |  |  |
Restricted Cash and Cash Equivalents Items [Line Items] |  |  |
Amortized Cost | 30,525 |  |
Gross Unrealized Losses | (159) |  |
Fair Value | 30,366 |  |
Short-term investments | 30,366 |  |
Treasury inflation - protected securities | Fair Value, Inputs, Level 2 |  |  |
Restricted Cash and Cash Equivalents Items [Line Items] |  |  |
Amortized Cost | 2,503 |  |
Gross Unrealized Losses | (2) |  |
Fair Value | 2,501 |  |
Long-Term Investments | $ 2,501 |  |

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