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Represents the expiration period under the consulting services agreement.

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Amount for accounts payable to related parties.

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Amount, after accumulated amortization and accumulated impairment loss, of asset recognized from cost incurred to obtain or fulfill contract with customer.

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The compensation expense recognized during the period pertaining to the deferred compensation arrangement.

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Amount of deferred income and obligation to transfer product and service to customer for which consideration has been received or is receivable, classified as current.

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Carrying amount as of the balance sheet date of obligations due all related parties.

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The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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A fee charged for services from professionals such as doctors, lawyers and accountants. The term is often expanded to include other professions, for example, pharmacists charging to maintain a medicinal profile of a client or customer.

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Expenses recognized resulting from transactions (excluding transactions that are eliminated in consolidated or combined financial statements) with related party.

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Purchases during the period (excluding transactions that are eliminated in consolidated or combined financial statements) with related party.

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Amount of revenue, fees and commissions earned from transactions between (a) a parent company and its subsidiaries; (b) subsidiaries of a common parent; (c) an entity and trusts for the benefit of employees, for example, but not limited to, pension and profit-sharing trusts that are managed by or under the trusteeship of the entity's management; (d) an entity and its principal, owners, management, or members of their immediate families; and (e) affiliates.

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Amount of expense related to royalty payments under a contractual arrangement such as payment for mineral and drilling rights and use of technology or intellectual property.

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Per share or per unit amount of equity securities issued.

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Number of shares issued in lieu of cash for services contributed to the entity. Number of shares includes, but is not limited to, shares issued for services contributed by vendors and founders.

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Value of stock issued in lieu of cash for services contributed to the entity. Value of the stock issued includes, but is not limited to, services contributed by vendors and founders.

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Note 12 - Related Party Transactions (Details Textual) - USD ($)	1 Months Ended			3 Months Ended		12 Months Ended
	Feb. 28, 2019	Jan. 31, 2017	Aug. 31, 2016	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019	Dec. 31, 2018	Jun. 30, 2014
Stock Issued During Period, Value, Issued for Services				$ 25,000
Chief Executive Officer [Member]
Deferred Compensation Arrangement with Individual, Compensation Expense				517,000		$ 386,000
Chief Financial Officer [Member]
Deferred Compensation Arrangement with Individual, Compensation Expense				65,600		56,800
Director [Member]
Deferred Compensation Arrangement with Individual, Compensation Expense				433,000		380,000
Director of Clinical Affairs [Member]
Royalty Expense				95,000	$ 91,490
Professional Fees				39,000	39,000
Accounts Payable, Related Parties				467,000		390,000
Milestone China [Member]
Revenue from Related Parties				0	50,000
Capitalized Contract Before Reserve Adjustment				$ 1.25			$ 1,250,000
Equity Method Investment, Ownership Percentage				28.40%				40.00%
United Systems [Member]
Capitalized Contract Cost, Net, Total							686,365
Wand Dental Inc [Member]
Deferred Revenue, Current, Total				$ 342,540		342,540
Manufacturing Agreement for Handpieces [Member]
Related Party Transaction, Purchases from Related Party				544,000	338,000
Due to Related Parties, Total				928,000		$ 943,000
Consulting Services [Member]
Consulting Services Agreement, Term (Year)			3 years
Related Party Transaction, Expenses from Transactions with Related Party				25,000	25,000
Consulting Services [Member] \| United Systems [Member]
Stock Issued During Period, Shares, Issued for Services (in shares)	285,714
Shares Issued, Price Per Share (in dollars per share)	$ 0.35
Stock Issued During Period, Value, Issued for Services	$ 100,000
Distributor Agreement to Milestone China [Member] \| United Systems [Member]
Revenue from Related Parties							$ 750,000
Consultant [Member] \| Innovest S.p.A. [Member]
Consulting Services Agreement, Term (Year)		1 year
Related Party Transaction, Expenses from Transactions with Related Party				$ 20,000	$ 20,000