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Fair Value Measurements (Details) - Fair Value, Measurements, Recurring - USD ($) $ in Thousands | Mar. 31, 2024 | Dec. 31, 2023
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Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Debt Securities, Available-for-Sale | $ 794,420 | $ 798,655
Fair Value, Inputs, Level 1 |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Debt Securities, Available-for-Sale | 31,427 | 33,613
Fair Value, Inputs, Level 2 |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Debt Securities, Available-for-Sale | 762,993 | 765,042
Cash Equivalents |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Cash Equivalents | 134,160 | 71,237
Cash Equivalents | Fair Value, Inputs, Level 1 |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Cash Equivalents | 31,427 | 33,613
Cash Equivalents | Fair Value, Inputs, Level 2 |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Cash Equivalents | 102,733 | 37,624
Short-Term Investments |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Debt Securities, Available-for-Sale | 616,461 | 671,414
Short-Term Investments | Fair Value, Inputs, Level 1 |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Debt Securities, Available-for-Sale | 0 | 0
Short-Term Investments | Fair Value, Inputs, Level 2 |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Debt Securities, Available-for-Sale | 616,461 | 671,414
Long Term Investments |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Debt Securities, Available-for-Sale | 43,799 | 56,004
Long Term Investments | Fair Value, Inputs, Level 1 |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Debt Securities, Available-for-Sale | 0 | 0
Long Term Investments | Fair Value, Inputs, Level 2 |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Debt Securities, Available-for-Sale | 43,799 | 56,004
Money market funds | Cash Equivalents |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Cash Equivalents | 31,427 | 33,613
Money market funds | Cash Equivalents | Fair Value, Inputs, Level 1 |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Cash Equivalents | 31,427 | 33,613
Money market funds | Cash Equivalents | Fair Value, Inputs, Level 2 |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Cash Equivalents | 0 | 0
Commercial paper | Cash Equivalents |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Cash Equivalents | 45,906 | 19,575
Commercial paper | Cash Equivalents | Fair Value, Inputs, Level 1 |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Cash Equivalents | 0 | 0
Commercial paper | Cash Equivalents | Fair Value, Inputs, Level 2 |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Cash Equivalents | 45,906 | 19,575
Commercial paper | Short-Term Investments |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Debt Securities, Available-for-Sale | 221,827 | 237,870
Commercial paper | Short-Term Investments | Fair Value, Inputs, Level 1 |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Debt Securities, Available-for-Sale | 0 | 0
Commercial paper | Short-Term Investments | Fair Value, Inputs, Level 2 |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Debt Securities, Available-for-Sale | 221,827 | 237,870
Municipal debt securities | Cash Equivalents |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Cash Equivalents | 20,004 | 7,848
Municipal debt securities | Cash Equivalents | Fair Value, Inputs, Level 1 |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Cash Equivalents | 0 | 0
Municipal debt securities | Cash Equivalents | Fair Value, Inputs, Level 2 |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Cash Equivalents | 20,004 | 7,848
Municipal debt securities | Short-Term Investments |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Debt Securities, Available-for-Sale | 14,013 | 13,914
Municipal debt securities | Short-Term Investments | Fair Value, Inputs, Level 1 |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Debt Securities, Available-for-Sale | 0 | 0
Municipal debt securities | Short-Term Investments | Fair Value, Inputs, Level 2 |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Debt Securities, Available-for-Sale | 14,013 | 13,914
US Treasury Bonds |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Debt Securities, Available-for-Sale | 7,298 | 14,126
US Treasury Bonds | Fair Value, Inputs, Level 1 |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Debt Securities, Available-for-Sale | 0 | 0
US Treasury Bonds | Fair Value, Inputs, Level 2 |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Debt Securities, Available-for-Sale | 7,298 | 14,126
US Treasury Bonds | Cash Equivalents |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Cash Equivalents | 24,746 | 2,000
US Treasury Bonds | Cash Equivalents | Fair Value, Inputs, Level 1 |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Cash Equivalents | 0 | 0
US Treasury Bonds | Cash Equivalents | Fair Value, Inputs, Level 2 |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Cash Equivalents | 24,746 | 2,000
Corporate debt securities |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Debt Securities, Available-for-Sale | 39,054 | 43,869
Corporate debt securities | Fair Value, Inputs, Level 1 |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Debt Securities, Available-for-Sale | 0 | 0
Corporate debt securities | Fair Value, Inputs, Level 2 |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Debt Securities, Available-for-Sale | 39,054 | 43,869
Corporate debt securities | Short-Term Investments |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Debt Securities, Available-for-Sale | 225,735 | 210,982
Corporate debt securities | Short-Term Investments | Fair Value, Inputs, Level 1 |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Debt Securities, Available-for-Sale | 0 | 0
Corporate debt securities | Short-Term Investments | Fair Value, Inputs, Level 2 |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Debt Securities, Available-for-Sale | 225,735 | 210,982
Federal agency debt securities |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Cash Equivalents | 12,077 | 8,201
Debt Securities, Available-for-Sale | 4,745 | 12,135
Federal agency debt securities | Fair Value, Inputs, Level 1 |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Cash Equivalents | 0 | 0
Debt Securities, Available-for-Sale | 0 | 0
Federal agency debt securities | Fair Value, Inputs, Level 2 |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Cash Equivalents | 12,077 | 8,201
Debt Securities, Available-for-Sale | 4,745 | 12,135
Federal agency debt securities | Short-Term Investments |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Debt Securities, Available-for-Sale | 140,588 | 194,522
Federal agency debt securities | Short-Term Investments | Fair Value, Inputs, Level 1 |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Debt Securities, Available-for-Sale | 0 | 0
Federal agency debt securities | Short-Term Investments | Fair Value, Inputs, Level 2 |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Debt Securities, Available-for-Sale | 140,588 | 194,522
Certificates of Deposit |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Debt Securities, Available-for-Sale | 7,000 | 0
Certificates of Deposit | Fair Value, Inputs, Level 1 |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Debt Securities, Available-for-Sale | 0 | 0
Certificates of Deposit | Fair Value, Inputs, Level 2 |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Debt Securities, Available-for-Sale | $ 7,000 | $ 0

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- Definition Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (aa) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481800/320-10-50-2 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481830/320-10-45-1 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 942 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(6)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479853/942-210-S99-1 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 30 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479130/326-30-45-1 + Details
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- Definition Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. + References No definition available. + Details
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