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Note 6 - Goodwill and Other Intangible Assets - Estimated Future Amortization Expense of Intangible Assets (Details) - USD ($)
$ in Thousands
Sep. 30, 2019
Dec. 31, 2018
Remainder of 2019 $ 2,385  
2020 10,594  
2021 10,580  
2022 10,140  
2023 9,288  
Thereafter 4,730  
Total $ 47,717 $ 36,974