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Note 3 - Business Combinations (Details Textual) - USD ($) $ in Thousands			2 Months Ended	3 Months Ended	12 Months Ended
	Feb. 03, 2020	Jan. 24, 2020	Mar. 31, 2020	Mar. 31, 2020	Dec. 31, 2019
Finite-Lived Intangible Asset, Useful Life (Year)				13 years	11 years
Developed Technology Rights [Member]
Finite-Lived Intangible Asset, Useful Life (Year)				15 years	15 years
Customer Relationships [Member]
Finite-Lived Intangible Asset, Useful Life (Year)				10 years
Trade Names [Member]
Finite-Lived Intangible Asset, Useful Life (Year)				5 years
Parcus Medical [Member]
Business Combination, Consideration Transferred, Total		$ 75,136
Payments to Acquire Businesses, Gross		32,794
Business Combination, Consideration Transferred, Deferred Consideration		1,642
Business Combination, Contingent Consideration, Liability, Total		40,700
Business Combination, Contingent Consideration Arrangements, Change in Range of Outcomes, Contingent Consideration, Liability, Value, High		60,000
Business Combination, Acquisition Related Costs		1,900
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill, Total		44,000
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual			$ 2,600
Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual			(900)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets, Total			$ 44,000	$ 44,000
Business Combination, Consideration Transferred, Liabilities Incurred		40,700
Parcus Medical [Member] | Developed Technology Rights [Member]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill, Total		$ 41,100
Finite-Lived Intangible Asset, Useful Life (Year)		15 years
Parcus Medical [Member] | Customer Relationships [Member]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill, Total		$ 1,100
Finite-Lived Intangible Asset, Useful Life (Year)		10 years
Parcus Medical [Member] | Trade Names [Member]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill, Total		$ 1,800
Finite-Lived Intangible Asset, Useful Life (Year)		5 years
Arthrosurface [Member]
Business Combination, Consideration Transferred, Total	$ 90,285
Payments to Acquire Businesses, Gross	61,909
Business Combination, Contingent Consideration Arrangements, Change in Range of Outcomes, Contingent Consideration, Liability, Value, High	40,000
Business Combination, Acquisition Related Costs	2,200
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill, Total	48,900
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual				4,200
Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual				$ (4,000)
Business Combination, Consideration Transferred, Liabilities Incurred	28,376
Business Combination, Consideration Transferred, Final Settlement Amount Recorded in Accounts Payable	400
Arthrosurface [Member] | Developed Technology Rights [Member]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill, Total	$ 37,000
Finite-Lived Intangible Asset, Useful Life (Year)	15 years
Arthrosurface [Member] | Customer Relationships [Member]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill, Total	$ 7,900
Finite-Lived Intangible Asset, Useful Life (Year)	10 years
Arthrosurface [Member] | Trade Names [Member]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill, Total	$ 3,400
Finite-Lived Intangible Asset, Useful Life (Year)	5 years
Arthrosurface [Member] | In Process Research and Development [Member]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill, Total	$ 600

X

- Definition

Amount of deferred consideration by the acquirer as part of consideration transferred in a business combination.

+ References

No definition available.

+ Details

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Namespace Prefix:	anik_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

The final settlement amount of cash consideration that is recorded in accounts payable in a business combination.

+ References

No definition available.

+ Details

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Namespace Prefix:	anik_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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X

- Definition

This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 25
-Paragraph 23
-URI http://asc.fasb.org/extlink&oid=116868678&loc=d3e1043-128460

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X

- Definition

Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 30
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=116859721&loc=d3e6613-128477

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-SubTopic 30
-Section 30
-Paragraph 7
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X

- Definition

Amount of liabilities incurred by the acquirer as part of consideration transferred in a business combination.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (b)(3)
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-Paragraph 8
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Namespace Prefix:	us-gaap_
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Period Type:	duration

X

- Definition

This element represents the amount of any change recognized during the period in the high-end of the estimated range of outcomes (undiscounted) of a liability assumed in a business combination arising from an item of contingent consideration.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 50
-Paragraph 4
-Subparagraph (a)(2)
-URI http://asc.fasb.org/extlink&oid=120321790&loc=d3e7008-128479

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X

- 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)
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Namespace Prefix:	us-gaap_
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Balance Type:	credit
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X

- Definition

This element represents the amount of earnings or loss of the acquiree since the acquisition date included in the consolidated income statement for the reporting period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
-Section 50
-Paragraph 2
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-URI http://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463

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X

- Definition

This element represents the amount of revenue of the acquiree since the acquisition date included in the consolidated income statement for the reporting period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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X

- Definition

Amount of assets acquired at the acquisition date.

+ References

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X

- Definition

Amount of intangible assets, excluding goodwill, acquired at the acquisition date.

+ References

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-Publisher FASB
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X

- Definition

Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

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X

- Definition

The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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-Paragraph 1
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