Note 8 - Intangible Assets - Intangible Assets Acquired (Details) - USD ($) |
Mar. 31, 2019 |
Dec. 31, 2018 |
|---|---|---|
| Gross Carrying Amount | $ 4,615,482 | $ 3,916,316 |
| Accumulated Amortization | 2,447,960 | 2,282,256 |
| Net Carrying Value | 2,167,522 | 1,634,060 |
| Franchise Rights [Member] | ||
| Gross Carrying Amount | 1,788,000 | 1,758,000 |
| Accumulated Amortization | 988,265 | 921,138 |
| Net Carrying Value | 799,735 | 836,862 |
| Customer Relationships [Member] | ||
| Gross Carrying Amount | 777,000 | 745,000 |
| Accumulated Amortization | 722,997 | 717,498 |
| Net Carrying Value | 54,003 | 27,502 |
| Development Rights [Member] | ||
| Gross Carrying Amount | 2,050,482 | 1,413,316 |
| Accumulated Amortization | 736,698 | 643,620 |
| Net Carrying Value | $ 1,313,784 | $ 769,696 |
| X | ||||||||||
- Definition Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Details
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