Principal Accounting Policies (Cost of revenues) (Details) ¥ in Thousands, $ in Thousands	12 Months Ended
Dec. 31, 2016 CNY (¥)	Dec. 31, 2016 USD ($)	Dec. 31, 2015 CNY (¥)	Dec. 31, 2014 CNY (¥)
Principal Accounting Policies [Abstract]
Sales taxes and surcharges in cost of revenues	¥ 119,767	$ 17,250	¥ 122,502	¥ 129,768
Tax rate of value added tax and surcharges	6.70%	6.70%
Applicable tax rate of cultural development fee for net advertising revenues	3.00%	3.00%

Sales taxes include business tax and value added tax. Business tax is imposed by the Chinese government on revenues we report for the provision of taxable services, transfers of intangible assets and sales of immovable properties.

No definition available.

Name:	feng_SalesTaxesAndSurcharges
Namespace Prefix:	feng_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration