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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) | 12 Months Ended
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Dec. 31, 2017
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES [Abstract] |
Number of days for standard payment | 60 days

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- Definition Refers to Company's standard payment term in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days, from invoice date. + References No definition available. + Details
Name: | amhi_NumberOfDaysForStandardPayment
Namespace Prefix: | amhi_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

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- References No definition available. + Details
Name: | us-gaap_AccountingPoliciesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration