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Accounting policies (Tables) | 12 Months Ended
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Dec. 31, 2018
Accounting Policies [Abstract] |
Schedule Of Property Plant And Equipment Useful Life [Table Text Block] | Rates are determined based on the estimated useful lives of the assets as follows:
Buildings |  | 5 to 40 years
Plant and equipment |  | 4 to 40 years
Distribution system |  | 3 to 40 years
Office furniture, fixtures and equipment |  | 3 to 10 years
Vehicles |  | 3 to 10 years
Leasehold improvements |  | Shorter of 5 years or lease term
Lab equipment |  | 5 to 10 years
Estimated Fair value Of Reporting Segment [Table Text Block] | The respective weightings the Company applied to each method as of December 31, 2018 were consistent with those used as of December 31, 2017 and were as follows:
Method |  | Retail |  |  | Bulk |  |  | Manufacturing |
Discounted cash flow |  |  | 80 | % |  |  | 80 | % |  |  | 80 | %
Guideline public company |  |  | 10 | % |  |  | 10 | % |  |  | 10 | %
Mergers and acquisitions |  |  | 10 | % |  |  | 10 | % |  |  | 10 | %
|  |  | 100 | % |  |  | 100 | % |  |  | 100 | %
Disaggregation of Revenue [Table Text Block] | The following table presents the Company’s revenues disaggregated by revenue source.
|  | Year Ended December 31, |
|  | 2018 |  |  | 2017 |
Retail revenues |  | $ | 25,621,048 |  |  | $ | 23,225,066 |
Bulk revenues |  |  | 31,031,287 |  |  |  | 28,682,113 |
Services revenues |  |  | 1,811,372 |  |  |  | 469,347 |
Manufacturing revenues |  |  | 7,256,150 |  |  |  | 6,990,496 |
Total Revenues |  | $ | 65,719,857 |  |  | $ | 59,367,022 |

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- Definition Tabular disclosure of disaggregation of revenue into categories depicting how nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factor. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130545-203045 + Details
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