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Note H - Investment in Unconsolidated Subsidiaries (Details Textual) | 1 Months Ended | 12 Months Ended |  |  |
--- | --- | --- | --- | --- | ---
Jun. 30, 2017 USD ($) | Jun. 30, 2014 USD ($) | Dec. 31, 2017 USD ($) | Dec. 31, 2016 USD ($) | Mar. 02, 2018 USD ($) | May 31, 2017 | Dec. 31, 2015 USD ($)
Income (Loss) from Equity Method Investments |  |  | $ (120,510) | $ (795,827) |  |  |
Proceeds from Sale of Variable Interest Entity Shares with Agreement to Repurchase |  |  | 250,000 |  |  |  |
Sales Revenue, Goods, Net |  |  | $ 11,281,886 | 10,482,005 |  |  |
Advanced Ocular Sciences SA [Member] |  |  |  |  |  |  |
Equity Method Investment, Ownership Percentage |  |  | 25.00% |  |  |  |
Advances to Affiliate |  |  |  |  |  |  | $ 78,798
Write-off of Advances to Affiliate |  |  |  | 78,798 |  |  |
Milestone China [Member] |  |  |  |  |  |  |
Equity Method Investment, Ownership Percentage |  | 40.00% |  |  |  |  |
Equity Method Investments | $ 0 | $ 1,000,000 | $ 0 | 0 |  |  |
Long-term Purchase Commitment, Minimum Quantity Required |  | 772 |  |  |  |  |
Income (Loss) from Equity Method Investments |  |  | 0 | (795,827) |  |  |
Cost-method Investments, Realized Losses |  |  | 3,147,470 | 1,124,350 |  |  |
Equity Method Investment, Deferred Gain on Sale | $ 1,400,000 |  |  |  |  |  |
Sales Revenue, Goods, Net |  |  | $ 2,071,000 | 3,425,000 |  |  |
Equity Method Investment, Deferred Intercompany Profit (Loss), Percentage |  |  | 40.00% |  |  |  |
Milestone China [Member] | Accounts Receivable from Related Parties [Member] |  |  |  |  |  |  |
Equity Method Investment, Deferred Intercompany Profit (Loss) |  |  | $ 751,500 | 630,990 |  |  |
Equity Method Investment, Unrealized Intercompany Profit (Loss) Not Eliminated, Amount |  |  | (120,510) |  |  |  |
Milestone China [Member] | Instruments and Handpieces [Member] |  |  |  |  |  |  |
Sales Revenue, Goods, Net |  |  | $ 2,071,000 | 3,425,000 |  |  |
Milestone China [Member] | Sale of Variable Interest Entity's Shares [Member] |  |  |  |  |  |  |
Equity Method Investment, Ownership Percentage | 40.00% |  |  |  |  | 40.00% |
Option to Repurchase, Period | 10 years |  |  |  |  |  |
Price for Shares of Variable Interest Entity Interest Sold | $ 1,400,000 |  |  |  |  |  |
Proceeds from Sale of Variable Interest Entity Shares with Agreement to Repurchase | 125,000 |  |  |  |  |  |
Financing Receivable, Net | 1,275,000 |  |  |  |  |  |
Note Receivable, Quarterly Installment Amount | 125,000 |  |  |  |  |  |
Option to Repurchase Variable Interest Entity Shares, Purchase Price | $ 1,400,000 |  |  |  |  |  |
Option to Repurchase Variable Entity Shares at Specified Purchase Price, Period | 2 years |  |  |  |  |  |
Equity Method Investment, Deferred Gain on Sale | $ 1,400,000 |  |  |  |  |  |
Variable Interest Entity Ownership Percentage Sold | 40.00% |  |  |  |  |  |
Milestone China [Member] | Sale of Variable Interest Entity's Shares [Member] | Subsequent Event [Member] | Upon Exercise of Default Agreement [Member] |  |  |  |  |  |  |
Return Obligation, Amount |  |  |  |  | $ 250,000 |  |
Milestone Education LLC [Member] | Accounts Receivable from Related Parties [Member] |  |  |  |  |  |  |
Equity Method Investment, Unrealized Intercompany Profit (Loss) Not Eliminated, Amount |  |  |  | $ 795,827 |  |  |

X
- Definition The aggregate amount of deferred intercompany profits and losses on transactions between the Entity and unconsolidated subsidiaries (including certain corporate joint ventures, and noncontrolled corporations), accounted for under the equity method of accounting,as of the balance sheet date. + References No definition available. + Details
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- Definition The deferred percentage of the gross profit with recognized revenue from Entity and unconsolidated subsidiaries (including certain corporate joint ventures, and noncontrolled corporations), accounted for under the equity method of accounting. + References No definition available. + Details
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- Definition This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=66022249&loc=d3e33749-111570 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.12) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition This item represents the entity's proportionate share for the period of the net income (loss) of its investee (such as unconsolidated subsidiaries and joint ventures) to which the equity method of accounting is applied. This item includes income or expense related to stock-based compensation based on the investor's grant of stock to employees of an equity method investee. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(12)) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04(10)) -URI http://asc.fasb.org/extlink&oid=6879464&loc=d3e573970-122913 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=66022249&loc=d3e33749-111570 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04(13)(f)) -URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882 + Details
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- Definition Net amount of the investment in a contractual right to receive money on demand or on fixed or determinable dates that is recognized as an asset in the creditor's statement of financial position. Examples include, but are not limited to, credit card receivables, notes receivable and receivables relating to lessor's rights to payments from leases other than operating leases that have been recorded as assets. Excludes trade accounts receivable with contractual maturity of one year or less and arose from the sale of goods or services. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.3) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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