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Note 5 - Intangible Assets, net (Details) |  |  | 3 Months Ended |
--- | --- | --- | --- | ---
Apr. 24, 2013 USD ($) | Aug. 31, 2011 USD ($) | Mar. 31, 2019 USD ($) | Mar. 31, 2018 USD ($) | Dec. 31, 2018 USD ($)
Note 5 - Intangible Assets, net (Details) [Line Items] |  |  |  |  |
Amortization of Intangible Assets |  |  | $ 101,676 | $ 101,676 |
Customer Relationships [Member] |  |  |  |  |
Note 5 - Intangible Assets, net (Details) [Line Items] |  |  |  |  |
Finite-Lived Intangible Assets, Gross |  |  | 6,150,559 |  | $ 6,150,559
Trademarks [Member] |  |  |  |  |
Note 5 - Intangible Assets, net (Details) [Line Items] |  |  |  |  |
Finite-Lived Intangible Assets, Gross |  |  | $ 200,000 |  | $ 200,000
Diamond Bar [Member] | Customer Relationships [Member] |  |  |  |  |
Note 5 - Intangible Assets, net (Details) [Line Items] |  |  |  |  |
Finite-Lived Intangible Assets, Gross |  | $ 50,000 |  |  |
Finite-Lived Intangible Assets, Amortization Method |  | straight-line method |  |  |
Diamond Bar [Member] | Trademarks [Member] |  |  |  |  |
Note 5 - Intangible Assets, net (Details) [Line Items] |  |  |  |  |
Number of trademarks acquired |  | 2 |  |  |
Payments to Acquire Intangible Assets |  | $ 200,000 |  |  |
Finite-Lived Intangible Assets, Amortization Method |  | straight-line method |  |  |
Finite-Lived Intangible Asset, Useful Life |  | 5 years |  |  |
Bright Swallow International Group Limited [Member] | Customer Relationships [Member] |  |  |  |  |
Note 5 - Intangible Assets, net (Details) [Line Items] |  |  |  |  |
Finite-Lived Intangible Assets, Amortization Method | straight-line method |  |  |  |
Finite-Lived Intangible Asset, Useful Life | 15 years |  |  |  |
Finite-lived Intangible Assets, Fair Value Disclosure | $ 6,100,559 |  |  |  |

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- Definition Number of trademarks acquired. + References No definition available. + Details
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- Definition The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3602-108585 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16225-109274 + Details
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- Definition Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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- Definition The amortization method of a major finite-lived intangible asset class. A major class is composed of intangible assets that can be grouped together because they are similar either by their nature or by their use in the operations of a company. The straight-line method is the preferred amortization method, unless another method better reflects the pattern in which the asset is consumed. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 35 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=108376495&loc=d3e15372-109273 + Details
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- Definition Fair value portion of assets, excluding financial assets, that lack physical substance, having a limited useful life. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 + Details
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- Definition Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 928 -SubTopic 340 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6473545&loc=d3e61844-108004 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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- Definition The cash outflow to acquire asset without physical form usually arising from contractual or other legal rights, excluding goodwill. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3213-108585 + Details
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