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Note 4 - Balance Sheet Components - Other Long-term Liabilities (Details) - USD ($)
$ in Thousands
Jun. 30, 2023
Dec. 31, 2022
Deferred compensation plan liabilities $ 70,071 $ 64,863
Dividend equivalents 1,953 6,847
Other 4,634 1,664
Total $ 76,658 $ 73,374