Note 15 - Segments (Details Textual) |
3 Months Ended | 6 Months Ended | ||||
|---|---|---|---|---|---|---|
|
Jun. 30, 2019
USD ($)
|
Jun. 30, 2018
USD ($)
|
Jun. 30, 2019
USD ($)
|
Jun. 30, 2018
USD ($)
|
|||
| Revenues, Total | $ 260,092 | $ 542,127 | $ 301,716 | $ 818,572 | ||
| Number of Primary Types of Products Sold | 2 | 2 | ||||
| Depreciation, Depletion and Amortization, Nonproduction, Total | [1] | $ 36,726 | 37,511 | $ 73,505 | 75,498 | |
| Selling, General and Administrative Expenses [Member] | ||||||
| Depreciation, Depletion and Amortization, Nonproduction, Total | $ 36,726 | $ 37,511 | 73,505 | $ 75,498 | ||
| Intersegment Eliminations [Member] | ||||||
| Revenues, Total | $ 0 | |||||
| ||||||
| X | ||||||||||
- Definition Represents the number of primary types of products sold by the entity. No definition available.
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| X | ||||||||||
- Definition The current period expense charged against earnings on long-lived, physical assets not used in production, and which are not intended for resale, to allocate or recognize the cost of such assets over their useful lives; or to record the reduction in book value of an intangible asset over the benefit period of such asset; or to reflect consumption during the period of an asset that is not used in production. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Details
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| X | ||||||||||
- Details
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