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Note 3 - Selected Balance Sheet Data - Estimated Future Amortization Expense for Intangible Assets (Details)
$ in Thousands
Dec. 31, 2019
USD ($)
2020 remainder $ 31,164
2021 60,162
2022 57,848
2023 55,976
2024 53,416
Thereafter 291,146
Total $ 549,712