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Investments (Schedule of Cash Equivalents, and Short term Investments) (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Debt Securities, Available-for-sale [Line Items] |  |  |
Total, amortized cost | $ 726,061 | $ 581,367 |
Total, gross unrealized gains | 845 | 615 |
Total, gross unrealized losses | (1,352) | (409) |
Total, fair value | 725,554 | 581,573 |
Proceeds from sale of cash equivalent investments | 29,800 | 47,000 | $ 29,600
Short-term Investments |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |
Short-term investments, amortized cost | 509,067 | 469,451 |
Short-term investments, gross unrealized gains | 841 | 615 |
Short-term investments, gross unrealized losses | (1,352) | (409) |
Short-term investments, fair value | 508,556 | 469,657 |
Asset-backed securities |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |
Short-term investments, amortized cost | 63,256 | 65,340 |
Short-term investments, gross unrealized gains | 168 | 170 |
Short-term investments, gross unrealized losses | (1,038) | (22) |
Short-term investments, fair value | 62,386 | 65,488 |
Certificate of deposits |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |
Short-term investments, amortized cost | 15,121 | 17,086 |
Short-term investments, gross unrealized gains | 0 | 0 |
Short-term investments, gross unrealized losses | 0 | 0 |
Short-term investments, fair value | 15,121 | 17,086 |
Commercial paper |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |
Short-term investments, amortized cost | 36,829 | 56,273 |
Short-term investments, gross unrealized gains | 0 | 0 |
Short-term investments, gross unrealized losses | 0 | 0 |
Short-term investments, fair value | 36,829 | 56,273 |
Corporate bonds |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |
Short-term investments, amortized cost | 258,191 | 251,671 |
Short-term investments, gross unrealized gains | 567 | 432 |
Short-term investments, gross unrealized losses | (101) | (299) |
Short-term investments, fair value | 258,657 | 251,804 |
Foreign government bonds |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |
Short-term investments, amortized cost | 1,590 |  |
Short-term investments, gross unrealized gains | 0 |  |
Short-term investments, gross unrealized losses | 0 |  |
Short-term investments, fair value | 1,590 |  |
Mortgage-backed securities |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |
Short-term investments, amortized cost | 11,159 |  |
Short-term investments, gross unrealized gains | 2 |  |
Short-term investments, gross unrealized losses | (18) |  |
Short-term investments, fair value | 11,143 |  |
Municipal bonds |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |
Short-term investments, amortized cost | 1,007 |  |
Short-term investments, gross unrealized gains | 2 |  |
Short-term investments, gross unrealized losses | 0 |  |
Short-term investments, fair value | 1,009 |  |
U.S. government agency bonds |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |
Short-term investments, amortized cost | 11,392 | 13,200 |
Short-term investments, gross unrealized gains | 0 | 0 |
Short-term investments, gross unrealized losses | (25) | (9) |
Short-term investments, fair value | 11,367 | 13,191 |
U.S. government bonds |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |
Short-term investments, amortized cost | 110,522 | 65,881 |
Short-term investments, gross unrealized gains | 102 | 13 |
Short-term investments, gross unrealized losses | (170) | (79) |
Short-term investments, fair value | 110,454 | 65,815 |
Level 1 |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |
Total, fair value | 288,708 | 146,616 |
Level 1 | Short-term Investments |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |
Short-term investments, fair value | 125,575 | 82,901 |
Level 1 | Asset-backed securities |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |
Short-term investments, fair value | 0 | 0 |
Level 1 | Certificate of deposits |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |
Short-term investments, fair value | 15,121 | 17,086 |
Level 1 | Commercial paper |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |
Short-term investments, fair value | 0 | 0 |
Level 1 | Corporate bonds |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |
Short-term investments, fair value | 0 | 0 |
Level 1 | Foreign government bonds |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |
Short-term investments, fair value | 0 |  |
Level 1 | Mortgage-backed securities |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |
Short-term investments, fair value | 0 |  |
Level 1 | Municipal bonds |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |
Short-term investments, fair value | 0 |  |
Level 1 | U.S. government agency bonds |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |
Short-term investments, fair value | 0 | 0 |
Level 1 | U.S. government bonds |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |
Short-term investments, fair value | 110,454 | 65,815 |
Level 2 |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |
Total, fair value | 436,846 | 434,957 |
Level 2 | Short-term Investments |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |
Short-term investments, fair value | 382,981 | 386,756 |
Level 2 | Asset-backed securities |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |
Short-term investments, fair value | 62,386 | 65,488 |
Level 2 | Certificate of deposits |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |
Short-term investments, fair value | 0 | 0 |
Level 2 | Commercial paper |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |
Short-term investments, fair value | 36,829 | 56,273 |
Level 2 | Corporate bonds |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |
Short-term investments, fair value | 258,657 | 251,804 |
Level 2 | Foreign government bonds |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |
Short-term investments, fair value | 1,590 |  |
Level 2 | Mortgage-backed securities |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |
Short-term investments, fair value | 11,143 |  |
Level 2 | Municipal bonds |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |
Short-term investments, fair value | 1,009 |  |
Level 2 | U.S. government agency bonds |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |
Short-term investments, fair value | 11,367 | 13,191 |
Level 2 | U.S. government bonds |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |
Short-term investments, fair value | 0 | 0 |
Cash equivalents |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |
Cash equivalents, amortized cost | 216,994 | 111,916 |
Cash equivalents, gross unrealized gains | 4 | 0 |
Cash equivalents, gross unrealized losses | 0 | 0 |
Cash equivalent, fair value | 216,998 | 111,916 |
Cash equivalents | Level 1 |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |
Cash equivalent, fair value | 163,133 | 63,715 |
Cash equivalents | Level 2 |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |
Cash equivalent, fair value | 53,865 | 48,201 |
Asset-backed securities |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |
Cash equivalents, amortized cost |  | 138 |
Cash equivalents, gross unrealized gains |  | 0 |
Cash equivalents, gross unrealized losses |  | 0 |
Cash equivalent, fair value |  | 138 |
Asset-backed securities | Level 1 |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |
Cash equivalent, fair value |  | 0 |
Asset-backed securities | Level 2 |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |
Cash equivalent, fair value |  | 138 |
Commercial paper |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |
Cash equivalents, amortized cost | 53,110 | 48,063 |
Cash equivalents, gross unrealized gains | 0 | 0 |
Cash equivalents, gross unrealized losses | 0 | 0 |
Cash equivalent, fair value | 53,110 | 48,063 |
Commercial paper | Level 1 |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |
Cash equivalent, fair value | 0 | 0 |
Commercial paper | Level 2 |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |
Cash equivalent, fair value | 53,110 | 48,063 |
Corporate bonds |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |
Cash equivalents, amortized cost | 755 |  |
Cash equivalents, gross unrealized gains | 0 |  |
Cash equivalents, gross unrealized losses | 0 |  |
Cash equivalent, fair value | 755 |  |
Corporate bonds | Level 1 |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |
Cash equivalent, fair value | 0 |  |
Corporate bonds | Level 2 |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |
Cash equivalent, fair value | 755 |  |
Money market funds |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |
Cash equivalents, amortized cost | 146,679 | 60,719 |
Cash equivalents, gross unrealized gains | 0 | 0 |
Cash equivalents, gross unrealized losses | 0 | 0 |
Cash equivalent, fair value | 146,679 | 60,719 |
Money market funds | Level 1 |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |
Cash equivalent, fair value | 146,679 | 60,719 |
Money market funds | Level 2 |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |
Cash equivalent, fair value | 0 | 0 |
U.S. government bonds |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |
Cash equivalents, amortized cost | 16,450 | 2,996 |
Cash equivalents, gross unrealized gains | 4 | 0 |
Cash equivalents, gross unrealized losses | 0 | 0 |
Cash equivalent, fair value | 16,454 | 2,996 |
U.S. government bonds | Level 1 |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |
Cash equivalent, fair value | 16,454 | 2,996 |
U.S. government bonds | Level 2 |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |
Cash equivalent, fair value | $ 0 | $ 0 |

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