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Income Taxes (Details Textual) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Income Taxes (Textual)
Cash payments for income taxes	$ 28.5	$ 30.8	$ 26.5
Tax expense (benefits) related to interest and penalties	0.1	(0.1)
Reduction of unrecognized tax benefits in the next twelve months, due to expiration of applicable statues of limitation	0.3
Unrecognized tax benefits that affects company's effective tax rate	0.5
Amount of interest and penalties	$ 0.2	$ 0.3

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The amount of estimated penalties and interest accrued as of the balance sheet date arising from income tax examinations.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 15
-Subparagraph (c)
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The sum of the amounts of estimated penalties and interest recognized in the period arising from income tax examinations.

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The amount of cash paid during the current period to foreign, federal, state, and local authorities as taxes on income.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
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The amount of the unrecognized tax benefit of a position taken for which it is reasonably possible that the total amount thereof will significantly increase or decrease within twelve months of the balance sheet date.

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The total amount of unrecognized tax benefits that, if recognized, would affect the effective tax rate.

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