LOSS PER SHARE (Schedule of Basic and Diluted Income Per Share) (Details)	12 Months Ended
Dec. 31, 2017 $ / shares shares	Dec. 31, 2017 ¥ / shares shares	Dec. 31, 2016 ¥ / shares shares	Dec. 31, 2015 ¥ / shares shares
Denominator:
Weighted average number of ordinary shares outstanding used in calculating loss per share - basic and diluted	130,091,977	130,091,977	130,631,867	134,546,772
Income (loss) per share - diluted
Loss per share - basic and diluted \| (per share)	$ (0.34)	¥ (2.19)	¥ (2.00)	¥ (0.58)

The amount of net income or loss for the period per each share in instances when basic and diluted earnings per share are the same amount and reported as a single line item on the face of the financial statements. Basic earnings per share is the amount of net income or loss for the period per each share of common stock or unit outstanding during the reporting period. Diluted earnings per share includes the amount of net income or loss for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

No definition available.

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Namespace Prefix:	us-gaap_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration