Income Taxes (Income Tax Provision - Income Tax Holiday Narrative) (Details)	12 Months Ended
Dec. 31, 2012
Income Tax Holiday [Line Items]
Tax holidays expiration period	December 2013

The date on which the special tax status will terminate.

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=6889476&loc=d3e330215-122817

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Staff Accounting Bulletin (SAB)

-Number Topic 11

-Section C

Name:	us-gaap_IncomeTaxHolidayTerminationDate
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration