FAIR VALUE MEASUREMENTS (Tables)
 12 Months Ended
Dec. 31, 2017
FAIR VALUE MEASUREMENTS [Abstract]  
Schedule of fair value measurements for each class of assets on nonrecurring basis
 
 
Fair Value Measurement at the End of the Reporting Period Using
 
 
 
As of
December 31,
2017
 
Quoted Prices
in Active
Markets for
Identical
Assets (Level 1)
 
Significance
Other
Observable
Inputs (Level 2)
 
Significant
Unobservable
Inputs (Level 3)
 
Total losses
 
 
 
RMB
 
RMB
 
RMB
 
RMB
 
RMB
 
Description
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Nonrecurring fair value measurements:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Long-lived assets held and used
 
 
632
 
 
—
 
 
—
 
 
632
 
 
(1,507)