Note 6 - Convertible Notes Payable - Related Party (Details Textual) - USD ($)	Mar. 31, 2021	Dec. 31, 2020
Convertible Notes Payable, Total	$ 1,151,870	$ 953,001
Note 1
Notes Payable, Convertible, Related Parties, Classified Current	$ 114,026	114,026
Debt Instrument, Interest Rate, Stated Percentage	0.75%
Debt Instrument, Convertible, Conversion Price (in dollars per share)	$ 0.168
Note 2
Notes Payable, Convertible, Related Parties, Classified Current	$ 262,500	262,500
Debt Instrument, Interest Rate, Stated Percentage	0.65%
Debt Instrument, Convertible, Conversion Price (in dollars per share)	$ 0.1875
Note 3
Notes Payable, Convertible, Related Parties, Classified Current	$ 39,620	39,620
Debt Instrument, Interest Rate, Stated Percentage	1.85%
Debt Instrument, Convertible, Conversion Price (in dollars per share)	$ 0.25
Note 4
Notes Payable, Convertible, Related Parties, Classified Current	$ 14,879	14,879
Debt Instrument, Interest Rate, Stated Percentage	1.61%
Debt Instrument, Convertible, Conversion Price (in dollars per share)	$ 0.25
Note 5
Notes Payable, Convertible, Related Parties, Classified Current	$ 16,000	16,000
Debt Instrument, Interest Rate, Stated Percentage	1.85%
Debt Instrument, Convertible, Conversion Price (in dollars per share)	$ 0.25
Note 6
Notes Payable, Convertible, Related Parties, Classified Current	$ 216,600	216,600
Debt Instrument, Interest Rate, Stated Percentage	1.85%
Debt Instrument, Convertible, Conversion Price (in dollars per share)	$ 0.25
Note 7
Notes Payable, Convertible, Related Parties, Classified Current	$ 23,366	23,366
Debt Instrument, Interest Rate, Stated Percentage	1.60%
Debt Instrument, Convertible, Conversion Price (in dollars per share)	$ 0.25
Note 8a
Notes Payable, Convertible, Related Parties, Classified Current	$ 48,000	48,000
Debt Instrument, Interest Rate, Stated Percentage	1.85%
Debt Instrument, Convertible, Conversion Price (in dollars per share)	$ 0.25
Note 8b
Notes Payable, Convertible, Related Parties, Classified Current	$ 84,000	84,000
Debt Instrument, Interest Rate, Stated Percentage	1.85%
Debt Instrument, Convertible, Conversion Price (in dollars per share)	$ 0.25
Note 9
Notes Payable, Convertible, Related Parties, Classified Current	$ 236,854	134,010
Debt Instrument, Interest Rate, Stated Percentage	0.13%
Debt Instrument, Convertible, Conversion Price (in dollars per share)	$ 0
Note 10
Notes Payable, Convertible, Related Parties, Classified Current	$ 59,025	0
Debt Instrument, Interest Rate, Stated Percentage	1.85%
Debt Instrument, Convertible, Conversion Price (in dollars per share)	$ 0.25
Note 11
Notes Payable, Convertible, Related Parties, Classified Current	$ 37,000	$ 0
Debt Instrument, Interest Rate, Stated Percentage	1.85%
Debt Instrument, Convertible, Conversion Price (in dollars per share)	$ 0.25

The amount for convertible notes payable (written promise to pay and including a conversion feature), due to related parties. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

No definition available.

+ Details

Name:	amar_NotesPayableConvertibleRelatedPartiesClassifiedCurrent
Namespace Prefix:	amar_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Including the current and noncurrent portions, carrying value as of the balance sheet date of a written promise to pay a note, initially due after one year or beyond the operating cycle if longer, which can be exchanged for a specified amount of one or more securities (typically common stock), at the option of the issuer or the holder.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(16))
-URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 946
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.6-04(13))
-URI http://asc.fasb.org/extlink&oid=120401414&loc=d3e603758-122996

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(22))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(16)(a))
-URI http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910

+ Details

Name:	us-gaap_ConvertibleNotesPayable
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The price per share of the conversion feature embedded in the debt instrument.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 5
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=120520924&loc=SL6031898-161870

+ Details

Name:	us-gaap_DebtInstrumentConvertibleConversionPrice1
Namespace Prefix:	us-gaap_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	instant

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

+ Details

Name:	us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Details

Name:	us-gaap_DebtInstrumentAxis=amar_ConvertibleNotePayableOneMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=amar_ConvertibleNotePayableTwoMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=amar_ConvertibleNotePayableThreeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=amar_ConvertibleNotePayableFourMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=amar_ConvertibleNotePayableFiveMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=amar_ConvertibleNotePayableSixMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=amar_ConvertibleNotePayableSevenMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=amar_ConvertibleNotePayableEightAMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=amar_ConvertibleNotePayableEightBMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=amar_ConvertibleNotePayableNineMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=amar_ConvertibleNotePayableTenMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=amar_ConvertibleNotePayableElevenMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: