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Fair Value of Financial Instruments - Assets measured on a recurring basis (Details) - USD ($) $ in Thousands | Sep. 30, 2022 | Dec. 31, 2021
--- | --- | ---
Fair value of financial instruments |  |
Fair market long term investments | $ 149,124 | $ 221,266
Fair Value, Recurring | Estimate of Fair Value Measurement |  |
Fair value of financial instruments |  |
Cash and cash equivalents | 2,690,622 | 2,057,440
Amortized Cost | 286,500 | 290,752
Fair market long term investments | 149,124 | 221,266
Total assets | 3,126,246 | 2,569,458
Fair Value, Recurring | Fair Value, Inputs, Level 1 |  |
Fair value of financial instruments |  |
Cash and cash equivalents | 2,690,622 | 2,057,440
Amortized Cost | 0 | 0
Fair market long term investments | 149,124 | 221,266
Total assets | 2,839,746 | 2,278,706
Fair Value, Recurring | Fair Value, Inputs, Level 2 |  |
Fair value of financial instruments |  |
Cash and cash equivalents | 0 | 0
Amortized Cost | 286,500 | 290,752
Fair market long term investments | 0 | 0
Total assets | 286,500 | 290,752
Fair Value, Recurring | Fair Value, Inputs, Level 3 |  |
Fair value of financial instruments |  |
Cash and cash equivalents | 0 | 0
Amortized Cost | 0 | 0
Fair market long term investments | 0 | 0
Total assets | $ 0 | $ 0

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- Definition Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=126976982&loc=d3e19207-110258 + 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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- Definition Amortized cost excluding accrued interest, after allowance for credit loss, 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/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 30 -Section 45 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=124258926&loc=SL82898722-210454 + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition The total amount of investments that are intended to be held for an extended period of time (longer than one operating cycle). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(12)) -URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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