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Note 5 - Goodwill and Other Intangible Assets - Estimated Future Amortization Expense of Intangible Assets (Details) - USD ($)
$ in Thousands
Dec. 31, 2018
Dec. 31, 2017
2019 $ 7,488  
2020 7,326  
2021 7,315  
2022 7,187  
2023 7,187  
Thereafter 469  
Total $ 36,972 $ 45,652