Note 2 - Summary of Significant Accounting Policies - Fair Value Derivative Assumptions (Details) - Warrant Liabilities [Member] - $ / shares		6 Months Ended
Jun. 16, 2017	Dec. 31, 2017
Average stock price (in CAD per share)	$ 0.64	$ 0.65
Expected dividend yield
Expected stock price volatility	33.00%	93.74%
Risk-free interest rate	0.71%	1.66%
Expected life of warrants (in years) (Year)	1 year	182 days

Average stock price assumption used in valuing an instrument.

No definition available.

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- Definition

Expected dividends to be paid to holders of the underlying shares or financial instruments (expressed as a percentage of the share or instrument's price).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (bbb)
-URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258

+ Details

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- Definition

Period the instrument, asset or liability is expected to be outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

+ Details

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- Definition

Measure of dispersion, in percentage terms (for instance, the standard deviation or variance), for a given stock price.

+ References

+ Details

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- Definition

Risk-free interest rate assumption used in valuing an instrument.

+ References

+ Details

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- Details

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