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v3.22.1

Note F - Investment in and Transactions With Equity Investees (Details Textual) $ / shares in Units, ¥ in Millions |  |  |  | 1 Months Ended | 12 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | ---
Oct. 08, 2021 USD ($) | Oct. 08, 2021 CNY (¥) | Apr. 30, 2020 USD ($) | Apr. 29, 2020 USD ($) | Jul. 31, 2020 USD ($) | May 31, 2020 USD ($) | Dec. 31, 2021 USD ($) | Dec. 31, 2020 USD ($) | Dec. 31, 2018 USD ($) | Mar. 27, 2021 | Apr. 23, 2020 $ / shares | Jun. 30, 2014 USD ($)
Income (Loss) from Equity Method Investments, Total |  |  |  |  |  |  | $ 242,589 | $ 97,887 |  |  |  |
Acquisition of Advanced Cosmetic Systems [Member] |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition, Percentage of Voting Interests Acquired |  |  |  |  |  | 50.00% |  |  |  | 100.00% |  |
Business Combination, Consideration Transferred, Total |  |  |  |  |  | $ 900,000 |  |  |  |  |  |
Business Combination, Percentage of Ownership Interest that Seller of Ownership Interest May Repurchase Within One Year of Sale Date |  |  |  |  |  | 50.00% |  |  |  |  |  |
Business Combination, Price at Which the Additional Ownership Interest Acquired May Repurchased Within One Year of Sale Date |  |  |  |  |  | $ 900,000 |  |  |  |  |  |
Manufacturing Agreement for Handpieces [Member] |  |  |  |  |  |  |  |  |  |  |  |
Related Party Transaction, Purchases from Related Party |  |  |  | $ 370,260 |  |  | 1,700,000 | 1,900,000 |  |  |  |
Sale Price in Cash [Member] |  |  |  |  |  |  |  |  |  |  |  |
Related Party Transaction, Purchases from Related Party |  |  | $ 100,000 |  | $ 100,000 |  |  |  |  |  |  |
Sale Price in Share [Member] |  |  |  |  |  |  |  |  |  |  |  |
Related Party Transaction, Purchases from Related Party |  |  | $ 170,260 |  |  |  |  |  |  |  |  |
Share Price (in dollars per share) | $ / shares |  |  |  |  |  |  |  |  |  |  | $ 1.59 |
Milestone China [Member] |  |  |  |  |  |  |  |  |  |  |  |
Equity Method Investments |  |  |  |  |  |  | 0 | 0 |  |  |  | $ 1,000,000
Equity Method Investment, Ownership Percentage |  |  |  |  |  |  |  |  |  |  |  | 40.00%
Financing Receivable, after Allowance for Credit Loss, Total |  |  |  |  |  |  |  |  | $ 2,800,000 |  |  |
Proceeds from Collection of Finance Receivables |  |  |  |  |  |  |  |  | $ 950,000 |  |  |
Revenue from Related Parties |  |  |  |  |  |  | 270,000,000,000 | 75,000 |  |  |  |
Contract with Customer, Liability, Total |  |  |  |  |  |  | 89,000 | $ 183,000 |  |  |  |
Number of Medical Instruments Sold |  |  |  |  |  |  |  | 100 |  |  |  |
Related Party Transaction, Purchases from Related Party |  |  |  |  |  |  | 0 | $ 0 |  |  |  |
Due from Related Parties, Total |  |  |  |  |  |  |  | 1,400,000 |  |  |  |
Costs and Expenses, Related Party |  |  |  |  |  |  |  | 370,260 |  |  |  |
Equity Method Investment, Realized Gain (Loss) on Disposal, Total |  |  |  |  |  |  | 407,000 |  |  |  |  |
Income (Loss) from Equity Method Investments, Total |  |  |  |  |  |  | 242,000 | 98,000 |  |  |  |
Milestone China [Member] | Accounts Receivable from Related Parties [Member] |  |  |  |  |  |  |  |  |  |  |  |
Equity Method Investment, Deferred Intercompany Profit (Loss) |  |  |  |  |  |  | $ 0 | $ 242,000 |  |  |  |
Milestone Beijing [Member] | Milestone China [Member] |  |  |  |  |  |  |  |  |  |  |  |
Equity Method Investment, Ownership Percentage |  |  |  |  |  |  |  |  |  |  |  | 75.00%
Anhui [Member] |  |  |  |  |  |  |  |  |  |  |  |
Equity Method Investment, Ownership Percentage |  |  |  |  |  |  | 28.40% |  |  |  |  |
Anhui [Member] | Milestone China [Member] | Chief Executive Officer [Member] |  |  |  |  |  |  |  |  |  |  |  |
Equity Method Investment, Ownership Percentage | 28.40% | 28.40% |  |  |  |  |  |  |  |  |  |
Proceeds from Sale of Equity Method Investments | $ 440,351 | ¥ 2,840 |  |  |  |  |  |  |  |  |  |

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