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ORGANIZATION AND PRINCIPAL ACTIVITIES (Narrative) (Details) | 1 Months Ended | 6 Months Ended | 12 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | ---
Sep. 30, 2017 CNY (¥) | Jun. 30, 2018 $ / shares shares | Dec. 31, 2018 shares | Nov. 20, 2017 | Aug. 31, 2017 | Feb. 14, 2017
American Depository Shares [Member] |  |  |  |  |  |
ORGANIZATION AND PRINCIPAL ACTIVITIES [Line Items] |  |  |  |  |  |
Number of shares issued | shares |  | 2,070,000 | 2,070,000 |  |  |
Issue price of American depositary shares (in dollars per share) | $ / shares |  | $ 4.25 |  |  |  |
Ambow BSC Inc [Member] |  |  |  |  |  |
ORGANIZATION AND PRINCIPAL ACTIVITIES [Line Items] |  |  |  |  |  |
Business Acquisition, Percentage of Voting Interests Acquired |  |  |  |  |  | 100.00%
Bay State College Inc [Member] |  |  |  |  |  |
ORGANIZATION AND PRINCIPAL ACTIVITIES [Line Items] |  |  |  |  |  |
Business Acquisition, Percentage of Voting Interests Acquired |  |  |  | 100.00% |  |
Ambow Online [Member] |  |  |  |  |  |
ORGANIZATION AND PRINCIPAL ACTIVITIES [Line Items] |  |  |  |  |  |
Disposal of Equity Interest In Subsidiary, Ownership Percentage |  |  |  |  | 100.00% |
Twenty First Century Training Center [Member] |  |  |  |  |  |
ORGANIZATION AND PRINCIPAL ACTIVITIES [Line Items] |  |  |  |  |  |
Disposal of Equity Interest In Subsidiary, Ownership Percentage | 100.00% |  |  |  |  |
Proceeds from Divestiture of Interest in Consolidated Subsidiaries | ¥ | ¥ 1 |  |  |  |  |

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