Condensed Financial Information of the Parent Company - Condensed Statements of Cash Flows (Detail) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2014 USD ($)	Dec. 31, 2014 CNY	Dec. 31, 2013 CNY	Dec. 31, 2012 CNY	Dec. 31, 2014 Parent Company [Member] USD ($)	Dec. 31, 2014 Parent Company [Member] CNY	Dec. 31, 2013 Parent Company [Member] CNY	Dec. 31, 2012 Parent Company [Member] CNY
Net cash used in operating activities	$ 164,998	1,023,743	593,893	279,515	$ (1,436)	(8,908)	(3,294)	0
Net cash used in investing activities	(283,582)	(1,759,517)	(45,943)	(27,734)	(128,326)	(796,209)	0	0
Net cash generated from financing activities	104,342	647,396	169,298	(44,910)	65,235	404,754	632,865	0
Effect of exchange rate changes on cash and cash equivalents	672	4,181	789	0	600	3,727	1,099	0
Net increase (decrease) in cash and cash equivalents	(13,570)	(84,197)	718,037	206,871	(63,927)	(396,636)	630,670	0
Cash and cash equivalents at beginning of year	183,511	1,138,613	420,576	213,705	101,646	630,670	0	0
Cash and cash equivalents at end of year	$ 169,941	1,054,416	1,138,613	420,576	$ 37,719	234,034	630,670	0

Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation.

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