Note 7 - Accounts and Other Receivables and Concentrations of Credit Risk (Details Textual) - USD ($) |
12 Months Ended | |
|---|---|---|
Dec. 31, 2017 |
Dec. 31, 2016 |
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| Allowance for Doubtful Accounts Receivable, Current | $ 0 | $ 0 |
| Disposal Group, Including Discontinued Operation, Accounts, Notes and Loans Receivable, Net | $ 1,598,994 | |
| Customer Concentration Risk [Member] | Accounts and Other Receivables [Member] | Cardinal Health 414 [Member] | ||
| Concentration Risk, Percentage | 99.00% | 0.00% |
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- Definition A valuation allowance for trade and other receivables due to an Entity within one year (or the normal operating cycle, whichever is longer) that are expected to be uncollectible. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount classified as accounts, notes and loans receivable attributable to disposal group held for sale or disposed of. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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