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GAIN FROM DEREGISTRATION OF SUBSIDIARIES (Details) ¥ in Thousands, $ in Thousands	3 Months Ended			6 Months Ended
	Jun. 30, 2021 USD ($)	Jun. 30, 2021 CNY (¥)	Jun. 30, 2020 CNY (¥)	Jun. 30, 2021 USD ($)	Jun. 30, 2021 CNY (¥)	Jun. 30, 2020 CNY (¥)
Gain from deregistration of subsidiaries	$ 183	¥ 1,181	¥ 3,897	$ 205	¥ 1,325	¥ 3,897

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- Definition

Gain from deregistration of subsidiaries.

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Name:	ambo_GainFromDeregistrationOfSubsidiaries
Namespace Prefix:	ambo_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration