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Note 11 - Stockholders’ Equity (Details) - Schedule of Stockholders' Equity Note, Warrants or Rights - $ / shares |  | 12 Months Ended
--- | --- | ---
Dec. 31, 2017 | Dec. 31, 2018
Schedule of Stockholders' Equity Note, Warrants or Rights [Abstract] |  |
Number of Warrants Outstanding | 858,334 |
Warrants Outstanding, Average Exercise Price | $ 2.71 | $ 2.71
Warrants Outstanding, Weighted Average Remaining Contractual Term in Years | 2 years 335 days | 1 year 335 days
Number of Warrants Exercisable | 858,334 |
Warrants Exercisable, Average Exercise Price | $ 2.71 | $ 2.71
Warrants Exercisable, Weighted Average Remaining Contractual Term in Years | 2 years 335 days | 1 year 335 days
Number of Warrants Granted |  | 0
Warrants Granted, Average Exercise Price |  | $ 0
Number of Warrants Exercised |  | 0
Warrants Exercised, Average Exercise Price |  | $ 0
Number of Warrants Expired |  | 0
Warrants Expired, Average Exercise Price |  | $ 0
Number of Warrants Outstanding |  | 858,334
Number of Warrants Exercisable |  | 858,334

X
- Definition Aggregate amount of each class of warrants or rights exercisable. + References No definition available. + Details
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X
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Namespace Prefix: | nvfy_
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X
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- Definition Number of warrants or rights outstanding. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(i)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 + Details
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