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CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) Non-Cash Activities - USD ($) $ in Thousands | 6 Months Ended
--- | ---
Jun. 30, 2026 | Jun. 30, 2025
Other Significant Noncash Transactions [Line Items] |  |
Unrealized (loss) gain on available-for-sale securities | $ (5,979) | $ 1,001
Common stock issued to Board of Directors and Scientific Advisory Board that was earned and accrued for in a previous period | 300 | 300
Net change in accrued dividends included in other current liabilities and other liabilities | 660 | 360
Net change in repurchases of common stock, inclusive of excise tax, included in other current liabilities | (100) | 0
Net change in accounts payable and accrued expenses related to purchases of property and equipment | 3,165 | 4,242
Cash paid for income taxes, net of refunds | $ 8,649 | $ (45,616)

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- Definition Amount, after refund, of cash paid to foreign, federal, state, and local jurisdictions as income tax. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 230 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2A -Publisher FASB -URI https://asc.fasb.org/1943274/2147482913/230-10-50-2A Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 23 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482685/740-10-50-23 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 22 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482685/740-10-50-22 Reference 4: 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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