Parent Company Only Condensed Financial Information - 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
Condensed Financial Statements, Captions [Line Items]
Net cash used in operating activities	$ 79,036	490,381	259,033	259,515	$ (1,389)	(8,613)	(17,599)	(11,493)
Net cash provided (used in) by investing activities	46,265	287,055	(133,540)	(659,290)	49,100	304,646	20,827	(153,651)
Net cash provided (used in) by financing activities	(93,341)	(579,144)	77,722	255,932	(51,948)	(322,317)	187,455	163,177
Exchange rate effect on cash	(427)	(2,643)	4,436	147	1,027	6,317	(2,946)	399
Net increase (decrease) in cash	31,533us-gaap_CashPeriodIncreaseDecrease	195,649us-gaap_CashPeriodIncreaseDecrease	207,651us-gaap_CashPeriodIncreaseDecrease	(143,696)us-gaap_CashPeriodIncreaseDecrease	(3,210)	(19,913)	187,737	(1,568)
Cash at beginning of year	45,617us-gaap_Cash	283,033us-gaap_Cash	75,382us-gaap_Cash	219,078us-gaap_Cash	31,435	195,038	7,301	8,869
Cash at end of year	$ 77,150us-gaap_Cash	478,682us-gaap_Cash	283,033us-gaap_Cash	75,382us-gaap_Cash	$ 28,225	175,125	195,038	7,301

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. Excludes cash and cash equivalents within disposal group and discontinued operation.

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Amount of cash inflow (outflow) from financing activities, including discontinued operations. Financing activity cash flows include obtaining resources from owners and providing them with a return on, and a return of, their investment; borrowing money and repaying amounts borrowed, or settling the obligation; and obtaining and paying for other resources obtained from creditors on long-term credit.

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Amount of cash inflow (outflow) from investing activities, including discontinued operations. Investing activity cash flows include making and collecting loans and acquiring and disposing of debt or equity instruments and property, plant, and equipment and other productive assets.

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Amount of cash inflow (outflow) from operating activities, including discontinued operations. Operating activity cash flows include transactions, adjustments, and changes in value not defined as investing or financing activities.

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