Condensed Consolidated Statements of Changes in Equity In Thousands, except Share data	Total USD ($)	Total CNY	Common Stock USD ($)	Common Stock CNY	Additional paid in capital USD ($)	Additional paid in capital CNY	Retained earning USD ($)	Retained earning CNY	Accumulated other comprehensive loss USD ($)	Accumulated other comprehensive loss CNY	Treasury stock USD ($)	Treasury stock CNY	Noncontrolling interest USD ($)	Noncontrolling interest CNY
Beginning Balance at Dec. 31, 2010		1,707,335		3,332		1,315,806		716,839		(117,479)		(226,495)		15,332
Beginning Balance (in shares) at Dec. 31, 2010				35,848,764
Net income	9,243	59,745						54,011						5,734
Foreign currency translation adjustments	(545)	(3,520)								(3,434)				(86)
Issuance of common stock pursuant to share-based compensation plan (in shares)				127,756
Issuance of common stock pursuant to share-based compensation plan				8		(8)
Share-based compensation		37,286				37,286
Purchase of treasury stock (in shares)				(865,570)
Purchase of treasury stock		(31,466)										(31,466)
Ending Balance at Jun. 30, 2011	$ 273,750	1,769,380	$ 517	3,340	$ 209,342	1,353,084	$ 119,262	770,850	$ (18,707)	(120,913)	$ (39,910)	(257,961)	$ 3,246	20,980
Ending Balance (in shares) at Jun. 30, 2011			35,110,950