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v3.19.2

Segment Information (Details Textual) | 3 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Mar. 31, 2019 USD ($) Segment | Dec. 31, 2018 USD ($) Segment | Dec. 31, 2017 USD ($)
Segment Information (Textual) |  |  |
Number of reportable segments | Segment | 2 | 2 |
Goodwill | $ 6,736,043 | $ 6,736,043 | $ 6,736,043
South America [Member] |  |  |
Segment Information (Textual) |  |  |
Gross long lived assets | 700,000 | 800,000 |
Goodwill | 100,000 | 200,000 |
Africa [Member] |  |  |
Segment Information (Textual) |  |  |
Gross long lived assets | 2,200,000 | 2,100,000 |
Goodwill | 1,700,000 | 1,600,000 |
North America [Member] |  |  |
Segment Information (Textual) |  |  |
Gross long lived assets | 7,300,000 | 7,400,000 |
Goodwill | $ 4,900,000 | $ 4,900,000 |

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- Definition Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=77989000&loc=SL49117168-202975 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=99380562&loc=d3e13770-109266 + Details
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- Definition Long-lived assets other than financial instruments, long-term customer relationships of a financial institution, mortgage and other servicing rights, deferred policy acquisition costs, and deferred tax assets. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 41 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e9038-108599 + Details
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