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Summary of Significant Accounting Policies (Details Textuals) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2017 | Sep. 30, 2016 | Sep. 30, 2017 | Sep. 30, 2016
Effective Income Tax Rate Reconciliation, Percent | 22.00% |  | 22.00% |
Summary of Significant Accounting Policies (Textuals) [Abstract] |  |  |  |
Amortization expense | $ 2.9 | $ 2.2 | $ 7.9 | $ 5.8
Future Amortization Expense Current Year |  |  | 11.4 |
Aggregate amortization expense for 2018 | 13.7 |  | 13.7 |
Aggregate amortization expense for 2019 | 13.3 |  | 13.3 |
Aggregate amortization expense for 2020 | 12.9 |  | 12.9 |
Aggregate amortization expense for 2021 | 12.3 |  | 12.3 |
Aggregate amortization expense for 2022 | 11.7 |  | 11.7 |
Purchased Intangible Amortization, Gross | 2.6 | 2.0 | 7.2 | 5.2
Purchased intangible amortization, net of tax | 1.7 | 1.3 | 4.7 | 3.5
Amortization expense associated with capitalized software | 7.7 | 6.8 | $ 22.9 | 20.2
Standard Warranty Period |  |  | one |
Share - based compensation expense | $ 4.0 | $ 3.6 | $ 11.8 | $ 10.9
Impact to Expected Annual Tax Rate related to adopting ASU 2016-09 |  |  | 2.00% |
Impact to the Estimated Annual Tax Rate related to the adoption of ASU 2016-09. | 1.00% |  | 3.00% |
Income Tax Effects Allocated Directly to Equity, Cumulative Effect of Change in Accounting Principle |  |  | $ 1,539.0 |
Excess Tax Benefit from Share-based Compensation, Financing Activities |  |  | $ 17.2 |

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