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Note 11 - Accrued Expenses (Details Textual) - USD ($) $ in Millions | Mar. 08, 2018 | Dec. 31, 2018
--- | --- | ---
Recall Payable |  | $ 0.1
Former Chief Executive Officer [Member] |  |
Severance Benefit, For A One Year Post Retirement Consulting Agreement | $ 0.3 |
Severance Benefit Following Retirement | $ 1.7 |
Severance Benefit Following Retirement, Term | 1 year 180 days |

X
- Definition The amount of recall expense that has been accrued, but not yet paid. + References No definition available. + Details
Name: | anik_RecallPayable
Namespace Prefix: | anik_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The amount of severance benefit provided following a person's retirement. + References No definition available. + Details
Name: | anik_SeveranceBenefitFollowingRetirement
Namespace Prefix: | anik_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The period of time for the severance benefit to be paid following retirement. + References No definition available. + Details
Name: | anik_SeveranceBenefitFollowingRetirementTerm
Namespace Prefix: | anik_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount of severance benefit provided in a one-year post-retirement consulting agreement. + References No definition available. + Details
Name: | anik_SeveranceBenefitForAOneYearPostRetirementConsultingAgreement
Namespace Prefix: | anik_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_TitleOfIndividualAxis=anik_FormerChiefExecutiveOfficerMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |