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v3.22.2

Financial Instruments (Details) $ in Thousands | 6 Months Ended |
--- | --- | ---
Jun. 30, 2022 USD ($) position | Dec. 31, 2021 USD ($)
Debt Securities, Available-for-sale, Fair Value to Amortized Cost [Abstract] |  |
Amortized Cost | $ 603,806 | $ 842,224
Gross Unrealized Gain |  | 1,342
Gross Unrealized Loss | (16,185) | (3,629)
Estimated Fair Value | 587,621 | 839,937
Proceeds from investments sold | 191,900 |
Realized gain | 200 |
Other than temporary impairment | $ 0 |
Number of investments, unrealized loss position | position | 70 |
Amortized Cost |  |
Less than or equal to one year | $ 187,392 |
Greater than one year but less than five years | 376,146 |
Total | 563,538 |
Fair Value |  |
Less than or equal to one year | 184,947 |
Greater than or equal to one year but less than five years | 362,406 |
Total | 547,353 |
Money market deposits |  |
Debt Securities, Available-for-sale, Fair Value to Amortized Cost [Abstract] |  |
Amortized Cost | 40,268 | 10,041
Estimated Fair Value | 40,268 | 10,041
U.S. Treasury securities |  |
Debt Securities, Available-for-sale, Fair Value to Amortized Cost [Abstract] |  |
Amortized Cost | 459,509 | 689,640
Gross Unrealized Gain |  | 1,081
Gross Unrealized Loss | (12,505) | (2,624)
Estimated Fair Value | 447,004 | 688,097
Corporate bonds and notes |  |
Debt Securities, Available-for-sale, Fair Value to Amortized Cost [Abstract] |  |
Amortized Cost | 34,280 | 52,729
Gross Unrealized Loss | (839) | (392)
Estimated Fair Value | 33,441 | 52,337
Municipal securities |  |
Debt Securities, Available-for-sale, Fair Value to Amortized Cost [Abstract] |  |
Amortized Cost | 69,749 | 89,814
Gross Unrealized Gain |  | 261
Gross Unrealized Loss | (2,841) | (613)
Estimated Fair Value | 66,908 | 89,462
Available-for-sale securities |  |
Debt Securities, Available-for-sale, Fair Value to Amortized Cost [Abstract] |  |
Gross Unrealized Loss | (16,200) |
Unrealized loss position | 547,400 |
Cash equivalents |  |
Debt Securities, Available-for-sale, Fair Value to Amortized Cost [Abstract] |  |
Estimated Fair Value | 40,268 | 10,041
Short-term investments |  |
Debt Securities, Available-for-sale, Fair Value to Amortized Cost [Abstract] |  |
Estimated Fair Value | $ 547,353 | $ 829,896

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