Income Taxes (Tax holidays) (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income Tax Disclosure [Abstract]
Income Tax Holiday, Termination Date	2025
Income Tax Holiday, Aggregate Dollar Amount	$ 5.6	$ 3.3	$ 0.9
Income Tax Holiday, Tax Benefit, Diluted Earnings Per Share	$ 0.02	$ 0.01	$ 0.00

The amount of income taxes from which a reporting entity is exempt or for which it will receive a reduction in income taxes as a result of the income tax holiday granted by the taxing jurisdiction.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SAB Topic 11.C)
-URI http://asc.fasb.org/extlink&oid=34349781&loc=d3e330215-122817

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration