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Note 1 - Summary of Significant Accounting Policies - Reconciliation of Cash, Cash Equivalents and Restricted Cash (Details) - USD ($)
$ in Thousands
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Cash and cash equivalents $ 316,688 $ 304,271 $ 283,472 $ 344,557
Restricted cash 4,676 3,659 11,593 12,571
Total cash, cash equivalents and restricted cash $ 321,364 $ 307,930 $ 295,065 $ 357,128