Note 4 - Fair Value Measurements - Fair Value of Financial Instruments (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Contingent Consideration - Short Term	$ 4,303
Contingent Consideration - Long Term	40,251
Estimate of Fair Value Measurement [Member]
Cash equivalents	51,932
Investments	26,452
Contingent Consideration - Short Term	4,303
Contingent Consideration - Long Term	40,251
Business Combination, Contingent Consideration, Liability, Total	44,554
Estimate of Fair Value Measurement [Member] \| Fair Value, Inputs, Level 1 [Member]
Cash equivalents	51,682
Investments	25,202
Contingent Consideration - Short Term
Contingent Consideration - Long Term
Business Combination, Contingent Consideration, Liability, Total
Estimate of Fair Value Measurement [Member] \| Fair Value, Inputs, Level 2 [Member]
Cash equivalents	250
Investments	1,250
Contingent Consideration - Short Term
Contingent Consideration - Long Term
Business Combination, Contingent Consideration, Liability, Total
Estimate of Fair Value Measurement [Member] \| Fair Value, Inputs, Level 3 [Member]
Cash equivalents
Investments
Contingent Consideration - Short Term	4,303
Contingent Consideration - Long Term	40,251
Business Combination, Contingent Consideration, Liability, Total	44,554
Estimate of Fair Value Measurement [Member] \| Certificates of Deposit [Member]
Cash equivalents	250
Investments	1,250
Estimate of Fair Value Measurement [Member] \| Certificates of Deposit [Member] \| Fair Value, Inputs, Level 1 [Member]
Cash equivalents
Investments
Estimate of Fair Value Measurement [Member] \| Certificates of Deposit [Member] \| Fair Value, Inputs, Level 2 [Member]
Cash equivalents	250
Investments	1,250
Estimate of Fair Value Measurement [Member] \| Certificates of Deposit [Member] \| Fair Value, Inputs, Level 3 [Member]
Cash equivalents
Investments
Estimate of Fair Value Measurement [Member] \| Money Market Funds [Member]
Cash equivalents	51,682	48,971
Estimate of Fair Value Measurement [Member] \| Money Market Funds [Member] \| Fair Value, Inputs, Level 1 [Member]
Cash equivalents	51,682	48,971
Estimate of Fair Value Measurement [Member] \| Money Market Funds [Member] \| Fair Value, Inputs, Level 2 [Member]
Cash equivalents
Estimate of Fair Value Measurement [Member] \| Money Market Funds [Member] \| Fair Value, Inputs, Level 3 [Member]
Cash equivalents
Estimate of Fair Value Measurement [Member] \| US Treasury Securities [Member]
Investments	25,202	27,480
Estimate of Fair Value Measurement [Member] \| US Treasury Securities [Member] \| Fair Value, Inputs, Level 1 [Member]
Investments	25,202	27,480
Estimate of Fair Value Measurement [Member] \| US Treasury Securities [Member] \| Fair Value, Inputs, Level 2 [Member]
Investments
Estimate of Fair Value Measurement [Member] \| US Treasury Securities [Member] \| Fair Value, Inputs, Level 3 [Member]
Investments
Reported Value Measurement [Member]
Cash equivalents	51,932
Investments	26,277
Contingent Consideration - Short Term	4,303
Contingent Consideration - Long Term	40,251
Business Combination, Contingent Consideration, Liability, Total	44,554
Reported Value Measurement [Member] \| Certificates of Deposit [Member]
Cash equivalents	250
Investments	1,250
Reported Value Measurement [Member] \| Money Market Funds [Member]
Cash equivalents	51,682
Reported Value Measurement [Member] \| Money Market Funds [Member] \| Fair Value, Inputs, Level 2 [Member]
Cash equivalents		48,971
Reported Value Measurement [Member] \| US Treasury Securities [Member]
Investments	$ 25,027
Reported Value Measurement [Member] \| US Treasury Securities [Member] \| Fair Value, Inputs, Level 2 [Member]
Investments		$ 27,479

Represents the fair value disclosure for cash equivalents as of the balance sheet date.

No definition available.

Name:	anik_CashEquivalentsFairValueDisclosure
Namespace Prefix:	anik_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount of liability recognized arising from contingent consideration in a business combination.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (c)(1)
-URI http://asc.fasb.org/extlink&oid=120321790&loc=d3e6927-128479

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 35
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=116859824&loc=d3e6819-128478

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 25
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=6911189&loc=d3e6408-128476

+ Details

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

- Definition

Amount of liability recognized arising from contingent consideration in a business combination, expected to be settled within one year or the normal operating cycle, if longer.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 25
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=6911189&loc=d3e6408-128476

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 35
-Paragraph 1
-Subparagraph b
-URI http://asc.fasb.org/extlink&oid=116859824&loc=d3e6819-128478

+ Details

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

- Definition

Amount of liability recognized arising from contingent consideration in a business combination, expected to be settled beyond one year or the normal operating cycle, if longer.

+ References

+ Details

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

- Definition

Fair value portion of investment securities, including, but not limited to, marketable securities, derivative financial instruments, and investments accounted for under the equity method.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258

+ Details

Name:	us-gaap_InvestmentsFairValueDisclosure
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Details

Name:	us-gaap_FairValueByMeasurementBasisAxis=us-gaap_EstimateOfFairValueFairValueDisclosureMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel1Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel2Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel3Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FairValueByAssetClassAxis=us-gaap_CertificatesOfDepositMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FairValueByAssetClassAxis=us-gaap_MoneyMarketFundsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FairValueByAssetClassAxis=us-gaap_USTreasurySecuritiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FairValueByMeasurementBasisAxis=us-gaap_CarryingReportedAmountFairValueDisclosureMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: