The Company and Basis of Presentation (Details)	1 Months Ended
Apr. 30, 2019 USD ($)
The Company and Basis of Presentation [Abstract]
Compensation bonus paid to employees	$ 1,356,000

Payments of cash to employees in compensation bonuses during the current period.

No definition available.

Name:	abcp_PaymentsToEmployeesInCompensationBonuses
Namespace Prefix:	abcp_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration