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DISPOSAL OF SUBSIDIARIES (Narrative) (Details)
¥ in Thousands, $ in Thousands
1 Months Ended 12 Months Ended
Sep. 30, 2017
CNY (¥)
Aug. 31, 2017
CNY (¥)
Dec. 31, 2018
CNY (¥)
Dec. 31, 2018
USD ($)
Dec. 31, 2017
CNY (¥)
Dec. 31, 2016
CNY (¥)
Dec. 31, 2018
USD ($)
Schedule of Equity Method Investments [Line Items]              
Gain on disposal     ¥ 0 $ 0 ¥ 38,145 ¥ 0  
Liabilities     647,448   811,461   $ 94,167
Disposal Group Including Discontinued Operation Payable Current One     ¥ 25,532   ¥ 137,532    
Ambow Online [Member]              
Schedule of Equity Method Investments [Line Items]              
Disposal Group, Including Discontinued Operation, Consideration   ¥ 171,137          
Decrease In Consideration   137,532          
Gain on disposal   ¥ 33,605          
Disposal Group Including Discontinued Operation Disposal Percentage   100.00%          
Twenty Firsts Training Center [Member]              
Schedule of Equity Method Investments [Line Items]              
Disposal Group, Including Discontinued Operation, Consideration ¥ 1            
Gain on disposal ¥ 4,540            
Disposal Group Including Discontinued Operation Disposal Percentage 100.00%            
Proceeds from Sales of Business, Affiliate and Productive Assets ¥ 1            
Liabilities ¥ 4,540