XML 53 R38.htm IDEA: XBRL DOCUMENT v3.8.0.1

ORGANIZATION (Details)	12 Months Ended
ORGANIZATION (Details)	Dec. 31, 2017 Subsidiary
ORGANIZATION [Abstract]
Number of subsidiaries	12

Represents number of subsidiaries.

No definition available.

Name:	amhi_NumberOfSubsidiaries
Namespace Prefix:	amhi_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

No definition available.

Name:	us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration