Summary of Significant Accounting Policies (Details Textuals) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Summary of Significant Accounting Policies (Textuals) [Abstract]
Amortization expense	$ 1.5		$ 4.7	$ 4.8
Future Amortization Expense Current Year			6.2
Aggregate amortization expense for 2016	6.1		6.1
Aggregate amortization expense for 2017	5.7		5.7
Aggregate amortization expense for 2018	5.5		5.5
Aggregate amortization expense for 2019	5.2		5.2
Aggregate amortization expense for 2020	4.9		4.9
Purchased Intangible Amortization, Gross	1.3	$ 1.5	4.2	4.2
Purchased intangible amortization, net of tax	0.9	1.0	2.9	2.8
Amortization expense associated with capitalized software	6.2	5.5	$ 18.1	16.7
Standard Warranty Period			one
Share - based compensation expense	$ 3.4	$ 3.3	$ 10.3	$ 9.8