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Note 6 - Preferred Stock (Details Textual) - $ / shares | 3 Months Ended |
--- | --- | ---
Mar. 31, 2021 | Dec. 31, 2020
Preferred Stock, Shares Authorized (in shares) | 2,445,598 | 2,445,598
Preferred Stock, Par or Stated Value Per Share (in dollars per share) | $ 0.01 | $ 0.01
Preferred Stock, Shares Outstanding, Ending Balance (in shares) | 0 | 0
Series A Preferred Stock [Member] |  |
Preferred Stock, Shares Authorized (in shares) | 3,000,000 |
Preferred Stock, Par or Stated Value Per Share (in dollars per share) | $ 0.01 |
Preferred Stock, Dividend Rate, Percentage | 10.00% |
Preferred Stock, Conversion Basis | 1 |
Common Stock For Conversion (in shares) | 554,402 |
Preferred Stock Number Of Authorized Shares Remaining (in shares) | 2,445,598 |
Preferred Stock, Shares Outstanding, Ending Balance (in shares) | 0 |

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- Definition Common stock for conversion. + References No definition available. + Details
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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 Describe the conversion features of preferred stock if preferred stock is convertible. That is, shares of preferred stock into which another convertible security was converted, or shares of preferred stock into which another class of preferred stock was converted. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21475-112644 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 http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + 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 http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + 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 http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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- Definition Aggregate share number for all nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer) held by stockholders. Does not include preferred shares that have been repurchased. + 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 http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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