Summary of Significant Accounting Policies (Details Textuals) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Summary of Significant Accounting Policies (Textuals) [Abstract]
Amortization expense	$ 3.5	$ 2.5	$ 7.1	$ 5.0
Future Amortization Expense Current Year			14.0
Aggregate amortization expense for 2019	13.4		13.4
Aggregate amortization expense for 2020	13.1		13.1
Aggregate amortization expense for 2021	12.5		12.5
Aggregate amortization expense for 2022	12.0		12.0
Aggregate amortization expense for 2023	11.8		11.8
Purchased Intangible Amortization, Gross	3.3	2.3	6.7	4.6
Purchased intangible amortization, net of tax	2.5	1.5	5.0	3.0
Amortization expense associated with capitalized software	8.4	7.7	$ 16.5	15.2
Standard Warranty Period			one
Share - based compensation expense	3.9	3.9	$ 8.2	7.8
Impact of Adopting ASU 2017-07 ASC 715 Compensation Retirement Benefit	$ 1.5	$ 1.1	$ 3.1	$ 1.9

The aggregate expense charged against earnings to amortize the cost of acquired intangible assets.

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The amount of amortization expense expected to be recognized during the current year.

+ References

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The impact of Adopting ASU 2017-7 ASC 715 Compensation-Retirement Benefits in the income statement which reclasses the non-service cost components from selling, general and administrative expense, cost of sales and research and development to other charges (income) beginning in 2018.

+ References

No definition available.

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The aggregate expense charged against earnings to amortize the cost of acquired intangible assets before tax.

+ References

No definition available.

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Disclosure of standard warranty period.

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Summary of Significant Accounting Policies.

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Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

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The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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Amount of expense for amortization of capitalized computer software costs.

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Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the next fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the fourth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the third fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the second fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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