XML 102 R33.htm IDEA: XBRL DOCUMENT
v3.21.1

GAIN FROM DEREGISTRATION OF SUBSIDIARIES | 12 Months Ended
--- | ---
Dec. 31, 2020
GAIN FROM DEREGISTRATION OF SUBSIDIARIES |
GAIN FROM DEREGISTRATION OF SUBSIDIARIES | 27. GAIN FROM DEREGISTRATION OF SUBSIDIARIES In 2019 and 2020, the Company closed several subsidiaries and schools through the deregistration procedures of local governmental and corporate service institutions. Those subsidiaries and schools had no business operations and were in accumulated deficit for years. As a result, the Company recognized gain from deregistration of those subsidiaries and schools in a collective amount of RMB 1,841 and RMB 3,967 in the years ended December 31, 2019 and 2020, respectively.

X
- References No definition available. + Details
Name: | ambo_GainLossFromDeregistrationOfSubsidiariesAbstract
Namespace Prefix: | ambo_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The entire disclosure of gain from derecognition of liabilities. + References No definition available. + Details
Name: | ambo_GainLossFromDeregistrationOfSubsidiariesDisclosureTextBlock
Namespace Prefix: | ambo_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration