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v3.20.4

Note 1 - Nature of Operations and Summary of Significant Accounting Policies (Details Textual) ₫ in Millions, ¥ in Millions |  | 12 Months Ended |  |
--- | --- | --- | --- | ---
Mar. 11, 2020 | Dec. 31, 2020 USD ($) | Dec. 31, 2019 USD ($) | Dec. 31, 2019 CNY (¥) | Nov. 30, 2019 VND (₫)
Goodwill, Impairment Loss |  | $ 0 | $ 1,764,000 |  |
Foreign Currency Transaction Gain (Loss), Unrealized |  | (335,000) | (355,000) |  |
Selling, General and Administrative Expenses [Member] |  |  |  |  |
Depreciation, Depletion and Amortization, Nonproduction, Total |  | 410,000 | 387,000 |  |
CHINA |  |  |  |  |
Restricted Cash and Cash Equivalents, Total |  |  | 2,900,000 | ¥ 20 |
VIET NAM |  |  |  |  |
Restricted Cash and Cash Equivalents, Total |  | $ 433,000 | $ 432,000 |  | ₫ 10
KOREA, DEMOCRATIC PEOPLE'S REPUBLIC OF |  |  |  |  |
Restricted Cash, Collateral Requirement Percentage |  | 100.00% |  |  |
HONG KONG | Revenue from Contract with Customer Benchmark [Member] | Geographic Concentration Risk [Member] |  |  |  |  |
Concentration Risk, Percentage | 79.00% |  |  |  |
Minimum [Member] |  |  |  |  |
Cash and Cash Equivalents, Period to Receive Cash Proceeds From Credit Card Processors (Day) |  | 2 days |  |  |
Minimum [Member] | Office Equipment, Office Software and Capitalized Internal-use Software Development [Member] |  |  |  |  |
Property, Plant and Equipment, Useful Life (Year) |  | 3 years |  |  |
Minimum [Member] | Furniture and Fixtures [Member] |  |  |  |  |
Property, Plant and Equipment, Useful Life (Year) |  | 5 years |  |  |
Maximum [Member] |  |  |  |  |
Cash and Cash Equivalents, Period to Receive Cash Proceeds From Credit Card Processors (Day) |  | 5 days |  |  |
Maximum [Member] | Office Equipment, Office Software and Capitalized Internal-use Software Development [Member] |  |  |  |  |
Property, Plant and Equipment, Useful Life (Year) |  | 5 years |  |  |
Maximum [Member] | Furniture and Fixtures [Member] |  |  |  |  |
Property, Plant and Equipment, Useful Life (Year) |  | 7 years |  |  |

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