| Note 5 - Notes Receivable | 12 Months Ended | |||||||||||||||||
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| Dec. 31, 2018 | ||||||||||||||||||
| Notes to Financial Statements | ||||||||||||||||||
| Loans, Notes, Trade and Other Receivables Disclosure [Text Block] | 
 Effective   April 29, 2017, the Company entered into a regional developer agreement for certain territories in the state of Florida in exchange for $320,000,of which $187,000was funded through a promissory note. The note bears interest at 10%per annum for 42months and requires monthly principal and interest payments over 36months, beginning  November 1, 2017 and maturing on  October 1, 2020. The note is secured by the regional developer rights in the respective territory. Effective   August 31, 2017, the Company entered into a regional developer agreement for certain territories in Maryland/Washington DC in exchange for $220,000,of which $117,475was funded through a promissory note. The note bears interest at 10%per annum for 36months and requires monthly principal and interest payments over 36months, beginning  September 1, 2017 and maturing on  August 1, 2020. The note is secured by the regional developer rights in the respective territory. Effective   September 22, 2017, the Company entered into a regional developer and asset purchase agreement for certain territories in Minnesota in exchange for $228,293,of which $119,147was funded through a promissory note. The note bears interest at 10%per annum for 36months and requires monthly principal and interest payments over 36months, beginning  October 1, 2017 and maturing on  September 1, 2020. The note is collateralized by the regional developer rights in the territory. The note was paid in full on  September 28, 2018. Effective   October 10, 2017, the Company entered into a regional developer agreement for certain territories in Texas, Oklahoma and Arkansas in exchange for $170,000,of which $135,688was funded through a promissory note. The note bears interest at 10%per annum for 36months and requires monthly principal and interest payments over 36months, maturing on  October 24, 2020. The note is collateralized by the regional developer rights in the territory. The net outstanding balances of the notes as of   December 31, 2018, and 2017were $278,072and $523,785,respectively. Maturities of notes receivable as of  December 31, 2018 are as follows: 
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