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Note 6 - Commitements (Details Textual) | 12 Months Ended |
--- | --- | ---
Dec. 31, 2016 USD ($) ft² | Dec. 31, 2015 USD ($) | Dec. 31, 2014 USD ($) | Mar. 31, 2017 USD ($) ft²
Area of Real Estate Property | ft² | 8,400 |  |  | 8,400
Operating Leases, Rent Expense | $ 149,288 | $ 146,092 | $ 117,084 |
Operating Leases, Future Minimum Payments Due | 151,993 |  |  | $ 113,995
Unrecorded Unconditional Purchase Obligation | $ 305,371 |  |  | $ 225,159

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- Definition Area of a real estate property. + References No definition available. + Details
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X
- Definition Amount of rent expense incurred for leased assets, including but not limited to, furniture and equipment, that is not directly or indirectly associated with the manufacture, sale or creation of a product or product line. + References No definition available. + Details
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- Definition Amount of required minimum rental payments for leases having an initial or remaining non-cancelable letter-terms in excess of one year. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 10 -Section 55 -Paragraph 40 -Subparagraph (Note 3) -URI http://asc.fasb.org/extlink&oid=82846649&loc=d3e38371-112697 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=77902758&loc=d3e41502-112717 + Details
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- Definition Amount of the unrecorded obligation to transfer funds in the future for fixed or minimum amounts or quantities of goods or services at fixed or minimum prices (for example, as in take-or-pay contracts or throughput contracts). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 440 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=77896938&loc=d3e25336-109308 + Details
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