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CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) Non-Cash Activities - USD ($) $ in Thousands | 9 Months Ended
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Sep. 30, 2023 | Sep. 30, 2022
Other Significant Noncash Transactions [Line Items] |  |
Unrealized gain (loss) on available-for-sale securities | $ 3,304 | $ (9,711)
Net change in accounts payable and accrued expenses related to purchases of property and equipment | 887 | 4,256
Cash paid for income tax | 81,132 | 42,227
Common Stock Issued to Board of Directors and Scientific Advisory Board that was Earned and Accrued for in Previous Period [Member] |  |
Other Significant Noncash Transactions [Line Items] |  |
Other significant noncash transaction, value of consideration received | $ 300 | $ 300

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- Definition The amount of cash paid during the current period to foreign, federal, state, and local authorities as taxes on income, net of any cash received during the current period as refunds for the overpayment of taxes. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482913/230-10-50-2 + Details
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