Name:	amar_Note9CorporateGovernanceandStockDetailsLineItems
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Data Type:	xbrli:stringItemType
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Period Type:	duration

The number of constituent members receiving shares of stock, both individuals and entities.

No definition available.

Name:	amar_NumberOfConstituentMembers
Namespace Prefix:	amar_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

The number of shares distributed to constituent members.

No definition available.

Name:	amar_NumberOfSharesDistributedToConstituentMembers
Namespace Prefix:	amar_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

The time period requirement for notice to directors of Special Directors Meetings.

No definition available.

Name:	amar_RequirementForNoticeToDirectorsOfSpecialDirectorsMeetingTimePeriod
Namespace Prefix:	amar_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

The percentage of issued and outstanding shares required to become eligible for supermajority voting rights.

No definition available.

Name:	amar_SupermajorityVotingRightsPercentageOfIssuedAndOutstandingShares
Namespace Prefix:	amar_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

Total number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) issued to shareholders (includes related preferred shares that were issued, repurchased, and remain in the treasury). May be all or portion of the number of preferred shares authorized. Excludes preferred shares that are classified as debt.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.28)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 29

-Article 5

Name:	us-gaap_PreferredStockSharesIssued
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

Aggregate share number for all nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer) held by stockholders. Does not include preferred shares that have been repurchased.