Note 13 - Shareholders' Equity (Details Textual) - $ / shares	Dec. 31, 2022	Dec. 31, 2021
Preferred Stock, Shares Authorized (in shares)	250,000
Preferred Stock, No Par Value (in dollars per share)	$ 0
Preferred Stock, Shares Issued, Total (in shares)	0
Preferred Stock, Shares Outstanding, Ending Balance (in shares)	0
Non-voting Preferred Stock [Member]
Preferred Stock, Shares Authorized (in shares)	250,000
Preferred Stock, No Par Value (in dollars per share)	$ 0
Series A Non-voting Convertible Preferred Stock [Member]
Preferred Stock, Shares Authorized (in shares)	125,000
Preferred Stock, Shares Issued, Total (in shares)	0	0
Preferred Stock, Shares Outstanding, Ending Balance (in shares)	0	0
Preferred Stock, Par or Stated Value Per Share (in dollars per share)	$ 0.06

Face amount per share of no-par value preferred stock nonredeemable or redeemable solely at the option of the issuer.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 13
-Subparagraph (a)
-URI https://asc.fasb.org/extlink&oid=126973232&loc=SL123496158-112644

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(28))
-URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

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Face amount or stated value per share of preferred stock nonredeemable or redeemable solely at the option of the issuer.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(28))
-URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 13
-Subparagraph (a)
-URI https://asc.fasb.org/extlink&oid=126973232&loc=SL123496158-112644

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The maximum number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) permitted to be issued by an entity's charter and bylaws.

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Total number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) issued to shareholders (includes related preferred shares that were issued, repurchased, and remain in the treasury). May be all or portion of the number of preferred shares authorized. Excludes preferred shares that are classified as debt.

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