Note 14 - Shareholder Rights Plan (Details Textual) - Shareholder Rights Plan Two Thousand Eight [Member] - $ / shares	12 Months Ended
Dec. 31, 2017	Apr. 04, 2008
Exercise Price per Share	$ 75
Stock Redemption Price per Share	0.01
Series B Junior Participating Preferred Stock [Member]
Stock Redemption Price per Share	$ 0.01
Preferred Stock, Capital Shares Reserved for Future Issuance	175,000
Minimum [Member]
Stock Holders Rights Plan Exercisability Threshold Percentage		15.00%
Maximum [Member]
Stockholder Rights Plan Exercise Trigger Threshold Percentage Voting Stock Ownership Offer		15.00%
Percentage of Beneficial Ownership Interests	50.00%

the per share amount at which grantees can acquire shares of common stock by exercise of stock.

No definition available.

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- Definition

The percentage of beneficial ownership interests.

+ References

No definition available.

+ Details

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Namespace Prefix:	anik_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

The threshold percentage of stock holders rights plan exercisability.

+ References

No definition available.

+ Details

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Namespace Prefix:	anik_
Data Type:	num:percentItemType
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- Definition

The price per share at which the stock of the entity is redeemed or may be called at.

+ References

No definition available.

+ Details

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Namespace Prefix:	anik_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	instant

- Definition

The threshold percentage of stockholder rights plan exercise trigger for voting stock ownership offer.

+ References

No definition available.

+ Details

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Namespace Prefix:	anik_
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- Definition

Aggregate number of nonredeemable preferred shares reserved for future issuance.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.28)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

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- Details

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- Details

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- Details

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- Details

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