PARENT COMPANY ONLY CONDENSED FINANCIAL INFORMATION (Condensed Statements of Cash Flows) (Details) ¥ in Thousands, $ in Thousands	12 Months Ended
Dec. 31, 2016 CNY (¥)	Dec. 31, 2016 USD ($)	Dec. 31, 2015 CNY (¥)	Dec. 31, 2014 CNY (¥)
Condensed Financial Statements, Captions [Line Items]
Exchange rate effect on cash	¥ (11,240)	$ (1,619)	¥ (17,419)	¥ (2,643)
Net (decrease) increase in cash	(295,535)	(42,566)	6,758	195,649
Cash at beginning of year	485,440	69,918	478,682	283,033
Cash at end of year	189,905	27,352	485,440	478,682
Parent Company [Member]
Condensed Financial Statements, Captions [Line Items]
Net cash used in operating activities	(5,230)	(753)	(29,140)	(8,613)
Net cash provided by (used in) investing activities	785,513	113,137	(354,246)	304,646
Net cash (used in) provided by financing activities	(748,076)	(107,745)	196,366	(322,317)
Exchange rate effect on cash	(11,757)	(1,694)	13,663	6,371
Net (decrease) increase in cash	20,450	2,945	(173,357)	(19,913)
Cash at beginning of year	1,768	255	175,125	195,038
Cash at end of year	¥ 22,218	$ 3,200	¥ 1,768	¥ 175,125

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.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Cash
-URI http://asc.fasb.org/extlink&oid=6506951

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.1)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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Amount of increase (decrease) in cash. Cash is the 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. Includes effect from exchange rate changes.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 230
-Section 45
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Amount of increase (decrease) from the effect of exchange rate changes on cash and cash equivalent balances held in foreign currencies.

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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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