CONSOLIDATED BALANCE SHEETS (Parentheticals) - $ / shares |
12 Months Ended | |
|---|---|---|
Dec. 31, 2023 |
Dec. 31, 2022 |
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| Preferred stock, par value (in dollars per share) | $ 0.01 | $ 0.01 |
| Preferred stock authorized (in shares) | 1,000,000 | 1,000,000 |
| Preferred stock, outstanding (in shares) | 0 | 0 |
| Common stock, par value (in dollars per share) | $ 0.01 | $ 0.01 |
| Common stock authorized (in shares) | 7,756,156 | 7,756,156 |
| Common stock, outstanding (in shares) | 7,669,227 | 7,695,679 |
| Treasury stock, at cost (in shares) | 86,929 | 60,477 |
| 1/16th nonparticipating perpetual royalty interest | ||
| Nonparticipating perpetual royalty interest rate (in percentage) | 6.25% | 6.25% |
| 1/128th nonparticipating perpetual royalty interest | ||
| Nonparticipating perpetual royalty interest rate (in percentage) | 0.78125% | |
| X | ||||||||||
- Definition Nonparticipating Perpetual Royalty Interest Rate No definition available.
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| X | ||||||||||
- Definition Face amount or stated value per share of common stock. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition The maximum number of common shares permitted to be issued by an entity's charter and bylaws. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Face amount or stated value per share of preferred stock nonredeemable or redeemable solely at the option of the issuer. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- 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. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- 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. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Number of previously issued common shares repurchased by the issuing entity and held in treasury. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Details
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- Details
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