Exchange Rates Used to Translate Amounts in RMB to U.S. Dollars (Detail)	0 Months Ended	12 Months Ended
	Jun. 14, 2011	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Balance sheet items, except for equity accounts		6.0969	6.2855	6.3009
Items in the statements of comprehensive income and cash flows	6.4822	6.1932	6.3125	6.4588