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Note 7 - Preferred Stock (Details Textual) | 3 Months Ended |  |
--- | --- | --- | ---
Mar. 31, 2022 $ / shares shares | Jan. 25, 2022 $ / shares shares | Dec. 31, 2021 $ / shares shares
Preferred Stock, Shares Authorized (in shares) | 3,000,000 |  |
Preferred Stock, Par or Stated Value Per Share (in dollars per share) | $ / shares | $ 0.01 |  |
Series A Preferred Stock Converted into Common Stock [Member] |  |  |
Conversion of Stock, Shares Converted (in shares) | 554,402 |  |
Series A Preferred Stock [Member] |  |  |
Preferred Stock, Shares Authorized (in shares) | 2,445,598 |  | 2,445,598
Preferred Stock, Par or Stated Value Per Share (in dollars per share) | $ / shares | $ 0.01 |  | $ 0.01
Preferred Stock, Dividend Rate, Percentage | 10.00% |  |
Preferred Stock, Convertible, Conversion Ratio | 1 |  |
Preferred Stock Number Of Authorized Shares Remaining (in shares) | 2,445,598 |  |
Preferred Stock, Shares Issued, Total (in shares) | 0 |  | 0
Preferred Stock, Shares Outstanding, Ending Balance (in shares) | 0 |  | 0
Series A Preferred Stock [Member] | Maximum [Member] |  |  |
Preferred Stock, Shares Authorized (in shares) | 3,000,000 |  | 3,000,000
Series B Preferred Stock [Member] |  |  |
Preferred Stock, Shares Authorized (in shares) |  | 2,000,000 |
Preferred Stock, Par or Stated Value Per Share (in dollars per share) | $ / shares |  | $ 0.01 |
Preferred Stock, Convertible, Conversion Ratio |  | 1.5 |
Preferred Stock, Shares Outstanding, Ending Balance (in shares) | 1,650,000 |  |

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- Definition The number of shares of preferred stock that remain available for issuance out of the total number of shares authorized by the company's charter. + References No definition available. + Details
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- Definition The number of shares converted in a noncash (or part noncash) transaction. Noncash is defined as transactions during a period that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 4 -URI https://asc.fasb.org/extlink&oid=126999549&loc=d3e4313-108586 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 3 -URI https://asc.fasb.org/extlink&oid=126999549&loc=d3e4304-108586 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 5 -URI https://asc.fasb.org/extlink&oid=126999549&loc=d3e4332-108586 + Details
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- Definition Number of common shares issuable upon conversion for each share of preferred stock to be converted. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 13 -Subparagraph (c) -URI https://asc.fasb.org/extlink&oid=126973232&loc=SL123496158-112644 + Details
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- Definition The percentage rate used to calculate dividend payments on preferred stock. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 13 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=126973232&loc=SL123496158-112644 + Details
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- Definition Face amount or stated value per share of preferred stock nonredeemable or redeemable solely at the option of the issuer. + References 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 + Details
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- Definition 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. + References 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 + Details
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- Definition 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. + References 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 + Details
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