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Summary of Significant Accounting Policies (Details Textuals) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2020 | Sep. 30, 2019 | Sep. 30, 2020 | Sep. 30, 2019
Summary of Significant Accounting Policies (Textuals) [Abstract] |  |  |  |
Amortization expense | $ 4.0 | $ 3.8 | $ 11.8 | $ 11.3
Future Amortization Expense Current Year |  |  | 15.8 |
Aggregate amortization expense for 2020 | 14.7 |  | 14.7 |
Aggregate amortization expense for 2021 | 13.2 |  | 13.2 |
Aggregate amortization expense for 2023 | 14.0 |  | 14.0 |
Aggregate amortization expense for 2024 | 12.7 |  | 12.7 |
Aggregate amortization expense for 2025 | 11.8 |  | 11.8 |
Purchased Intangible Amortization, Gross | 3.8 | 3.7 | 11.2 | 10.6
Purchased intangible amortization, net of tax | 2.8 | 2.8 | 8.5 | 8.0
Amortization expense associated with capitalized software | 10.1 | 8.4 | 30.0 | 25.4
Share - based compensation expense | $ 4.4 | $ 4.5 | $ 13.2 | $ 13.3

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