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Note 4 - Balance Sheet Components - Other Long-term Liabilities (Details) - USD ($)
$ in Thousands
Sep. 30, 2023
Dec. 31, 2022
Deferred compensation plan liabilities $ 69,327 $ 64,863
Dividend equivalents 2,316 6,847
Other 5,758 1,664
Total $ 77,401 $ 73,374