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Note 13 - Revenue by Product Group, by Significant Customer and by Geographic Location; Geographic Information (Details Textual) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Inventory Recall Expense |  |  | $ 1,100 | $ 900
Inventory Recall Reserve | $ 0 | $ 0 |  |
Mitek [Member] |  |  |  |
Revenues From Agreements as Percent of Total Revenue | 49.00% | 71.00% | 73.00% |

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- Definition The amount of reserve payable for inventory recalls. + References No definition available. + Details
Name: | anik_InventoryRecallReserve
Namespace Prefix: | anik_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition The percent of total revenue that revenue from agreements comprises. + References No definition available. + Details
Name: | anik_RevenuesFromAgreementsAsPercentOfTotalRevenue
Namespace Prefix: | anik_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

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- Definition Reflects the amount charged against earnings comprised of the costs to announce and effect a recall of defective merchandise. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.3) -URI http://asc.fasb.org/extlink&oid=120395209&loc=SL114868664-224227 + Details
Name: | us-gaap_InventoryRecallExpense
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Details
Name: | srt_CounterpartyNameAxis=anik_MitekMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |