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Note 3 - Selected Balance Sheet Data - Estimated Future Amortization Expense for Intangible Assets (Details)
$ in Thousands
Sep. 30, 2018
USD ($)
2019 remainder $ 45,850
2020 60,475
2021 60,120
2022 58,424
2023 56,549
Thereafter 351,268
Total $ 632,686