INCOME TAXES (Schedule of Reconciliation Between the Applicable Statutory Income Tax Rate and the Company's Effective Tax Rate) (Details)
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Reconciliation between the applicable statutory income tax rate and the Company's effective tax rate      
PRC applicable income tax rate (as a percent) 25.00% 25.00% 25.00%
Valuation allowance (as a percent) (3.00%) 26.00% 1.00%
Preferential tax rate (24.00%) 0.00% 0.00%
Effect of different tax rate of subsidiaries (as a percent) (4.00%) 20.00% (22.00%)
Others (as a percent) (4.00%) (13.00%) (4.00%)
Effective income tax rate (as a percent) (10.00%) 58.00% 0.00%