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v3.21.1

Accounting policies - Weighted the fair values estimated (Details) |  | 3 Months Ended | 12 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | ---
Jan. 24, 2020 USD ($) | Dec. 31, 2017 USD ($) | Sep. 30, 2016 USD ($) | Dec. 31, 2020 USD ($) customer | Dec. 31, 2019 USD ($) customer | Jan. 31, 2020 | Dec. 31, 2018 USD ($) | Feb. 11, 2016 USD ($)
Goodwill |  |  |  | $ 13,325,013 | $ 13,325,013 |  |  |
Retail [Member] |  |  |  |  |  |  |  |
Estimated Fair Value Percentage Segment Reporting Information |  |  |  | 100.00% | 100.00% |  |  |
Estimated Fair Value Carrying Amount Exceeded Percentage |  |  |  | 101 | 74 |  |  |
Goodwill |  |  |  | $ 1,170,511 | $ 1,170,511 |  |  |
Bulk [Member] |  |  |  |  |  |  |  |
Estimated Fair Value Percentage Segment Reporting Information |  |  |  | 100.00% | 100.00% |  |  |
Estimated Fair Value Carrying Amount Exceeded Percentage |  |  |  | 49 | 58 |  |  |
Goodwill |  |  |  | $ 1,948,875 | $ 1,948,875 |  |  |
Services [Member] |  |  |  |  |  |  |  |
Estimated Fair Value Percentage Segment Reporting Information |  |  |  | 100.00% |  |  |  |
Estimated Fair Value Carrying Amount Exceeded Percentage |  |  |  | 17 |  |  |  |
Goodwill |  |  |  | $ 5,320,416 | $ 5,320,416 |  |  |
Manufacturing Units [Member] |  |  |  |  |  |  |  |
Estimated Fair Value Percentage Segment Reporting Information |  |  |  | 100.00% | 100.00% |  |  |
Estimated Fair Value Carrying Amount Exceeded Percentage |  |  |  | 31 |  |  |  |
Goodwill |  |  |  | $ 4,885,211 | $ 4,885,211 |  |  |
Discounted Cash Flow Method [Member] | Retail [Member] |  |  |  |  |  |  |  |
Estimated Fair Value Percentage Segment Reporting Information |  |  |  | 80.00% | 80.00% |  |  |
Discounted Cash Flow Method [Member] | Bulk [Member] |  |  |  |  |  |  |  |
Estimated Fair Value Percentage Segment Reporting Information |  |  |  | 80.00% | 80.00% |  |  |
Discounted Cash Flow Method [Member] | Services [Member] |  |  |  |  |  |  |  |
Estimated Fair Value Percentage Segment Reporting Information |  |  |  | 80.00% |  |  |  |
Discounted Cash Flow Method [Member] | Manufacturing Units [Member] |  |  |  |  |  |  |  |
Estimated Fair Value Percentage Segment Reporting Information |  |  |  | 80.00% | 80.00% |  |  |
Guideline Public Company Method [Member] | Retail [Member] |  |  |  |  |  |  |  |
Estimated Fair Value Percentage Segment Reporting Information |  |  |  | 20.00% | 10.00% |  |  |
Guideline Public Company Method [Member] | Bulk [Member] |  |  |  |  |  |  |  |
Estimated Fair Value Percentage Segment Reporting Information |  |  |  | 20.00% | 10.00% |  |  |
Guideline Public Company Method [Member] | Services [Member] |  |  |  |  |  |  |  |
Estimated Fair Value Percentage Segment Reporting Information |  |  |  | 20.00% |  |  |  |
Guideline Public Company Method [Member] | Manufacturing Units [Member] |  |  |  |  |  |  |  |
Estimated Fair Value Percentage Segment Reporting Information |  |  |  | 20.00% | 10.00% |  |  |
Mergers And Acquisitions Method [Member] | Retail [Member] |  |  |  |  |  |  |  |
Estimated Fair Value Percentage Segment Reporting Information |  |  |  |  | 10.00% |  |  |
Mergers And Acquisitions Method [Member] | Bulk [Member] |  |  |  |  |  |  |  |
Estimated Fair Value Percentage Segment Reporting Information |  |  |  |  | 10.00% |  |  |
Mergers And Acquisitions Method [Member] | Manufacturing Units [Member] |  |  |  |  |  |  |  |
Estimated Fair Value Percentage Segment Reporting Information |  |  |  |  | 10.00% |  |  |
Aerex |  |  |  |  |  |  |  |
Ownership interest acquired | 49.00% |  |  |  |  | 49.00% |  | 51.00%
Amount of remaining ownership purchased | $ 8,500,000 |  |  |  |  |  |  |
Goodwill |  | $ 4,885,211 | $ 6,285,211 |  |  |  |  | $ 8,035,211
Impairment of goodwill |  | $ 1,400,000 | $ 1,750,000 |  |  |  |  |
Number of customers | customer |  |  |  | 1 | 1 |  |  |
Aerex | Revenue Benchmark [Member] |  |  |  |  |  |  |  |
Percentage of total |  |  |  | 80.00% | 68.00% |  |  |
Aerex | Gross Profit [Member] |  |  |  |  |  |  |  |
Percentage of total |  |  |  | 89.00% | 68.00% |  |  |
CW Belize [Member] |  |  |  |  |  |  |  |
Disposal Group, Including Discontinued Operation, Goodwill, Noncurrent |  |  |  |  |  |  | $ 380,000 |

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