Note 5 - Common Stock and Warrants (Details) - Stock Warrant Activity	3 Months Ended
Mar. 31, 2016 $ / shares shares
Note 5 - Common Stock and Warrants (Details) - Stock Warrant Activity [Line Items]
Outstanding December 31, 2015 \| shares	0
Granted \| shares	0
Cancelled/Expired \| shares	0
Exercised \| shares	0
Outstanding March 31, 2016 \| shares	0
Exercisable March 31, 2016 \| shares	0
Weighted Average [Member]
Note 5 - Common Stock and Warrants (Details) - Stock Warrant Activity [Line Items]
Outstanding December 31, 2015 \| $ / shares	$ 0
Granted \| $ / shares	0
Cancelled/Expired \| $ / shares	0
Exercised \| $ / shares	0
Outstanding March 31, 2016 \| $ / shares	0
Exercisable March 31, 2016 \| $ / shares	$ 0

No definition available.

Name:	amar_Note5CommonStockandWarrantsDetailsStockWarrantActivityLineItems
Namespace Prefix:	amar_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The price range for share based compensation awards other than options, cancelled/expired in period.

+ References

No definition available.

+ Details

Name:	amar_ShareBasedCompensationAwardsOtherThanOptionsCancelledExpiredInPeriodPriceRange
Namespace Prefix:	amar_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration

- Definition

The number of shares into which fully or partially vested awards other than options outstanding as of the balance sheet date can be currently converted under the option plan.

+ References

No definition available.

+ Details

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

- Definition

Exercisable price range 1 for share based compensation awards other than options.

+ References

No definition available.

+ Details

Name:	amar_ShareBasedCompensationAwardsOtherThanOptionsExercisablePriceRange1
Namespace Prefix:	amar_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	instant

- Definition

The per-share price of equity awards other than options exercised in period.

+ References

No definition available.

+ Details

Name:	amar_ShareBasedCompensationAwardsOtherThanOptionsExercisedPriceRange1
Namespace Prefix:	amar_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration

- Definition

The per-share price of equity awards other than options granted in period.

+ References

No definition available.

+ Details

Name:	amar_ShareBasedCompensationAwardsOtherThanOptionsGrantedPriceRange1
Namespace Prefix:	amar_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration

- Definition

The price range for share based compensation awards other than options, outstanding in period.

+ References

No definition available.

+ Details

Name:	amar_ShareBasedCompensationAwardsOtherThanOptionsOutstandingPriceRange1
Namespace Prefix:	amar_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	instant

- Definition

The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(iv)(3)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

+ Details

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(iii)(1)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

+ Details

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(i)-(ii)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

+ Details

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

- Definition

Number of non-option equity instruments exercised by participants.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(iv)(2)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

+ Details

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsExercised
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	us-gaap_RangeAxis=us-gaap_WeightedAverageMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Note 5 - Common Stock and Warrants (Details) - Stock Warrant Activity	3 Months Ended
	Mar. 31, 2016 $ / shares shares
Note 5 - Common Stock and Warrants (Details) - Stock Warrant Activity [Line Items]
Outstanding December 31, 2015 \| shares	0
Granted \| shares	0
Cancelled/Expired \| shares	0
Exercised \| shares	0
Outstanding March 31, 2016 \| shares	0
Exercisable March 31, 2016 \| shares	0
Weighted Average [Member]
Note 5 - Common Stock and Warrants (Details) - Stock Warrant Activity [Line Items]
Outstanding December 31, 2015 \| $ / shares	$ 0
Granted \| $ / shares	0
Cancelled/Expired \| $ / shares	0
Exercised \| $ / shares	0
Outstanding March 31, 2016 \| $ / shares	0
Exercisable March 31, 2016 \| $ / shares	$ 0