Condensed Consolidated Balance Sheets (Parentheticals) (unaudited) - USD ($) |
Mar. 31, 2021 |
Dec. 31, 2020 |
|---|---|---|
| Deferred revenue from company clinics attributable to VIE | $ 3,045,868 | $ 3,000,369 |
| Series A preferred stock, par value (in dollars per share) | $ 0.001 | $ 0.001 |
| Series A preferred stock, shares authorized (in shares) | 50,000 | 50,000 |
| Series A preferred stock, shares issued (in shares) | 0 | 0 |
| Series A preferred stock, shares outstanding (in shares) | 0 | 0 |
| Common stock, par value (in dollars per share) | $ 0.001 | $ 0.001 |
| Common stock, shares authorized (in shares) | 20,000,000 | 20,000,000 |
| Common stock, shares issued (in shares) | 14,288,111 | 14,174,237 |
| Common stock, shares outstanding (in shares) | 14,257,325 | 14,157,070 |
| Treasury stock, shares (in shares) | 30,786 | 17,167 |
| Variable Interest Entity, Primary Beneficiary | ||
| Deferred revenue from company clinics attributable to VIE | $ 2,700,000 | $ 2,600,000 |
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- Definition Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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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. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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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. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Number of common and preferred shares that were previously issued and that were repurchased by the issuing entity and held in treasury on the financial statement date. This stock has no voting rights and receives no dividends. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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