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Note 18 - Subsequent Events	12 Months Ended
	Dec. 31, 2019
Notes to Financial Statements
Subsequent Events [Text Block]	18. Subsequent events On January 31, 2020, the holders of the Amended Whitehorse Warrants, described above in Note 12, Common stock, treasury stock and warrants , exercised the Put Right to require the Company to purchase from the warrant holders the 300,000 Warrant Shares for an aggregate of $1,150. The Company funded such purchase with cash on hand.

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- Definition

The entire disclosure for significant events or transactions that occurred after the balance sheet date through the date the financial statements were issued or the date the financial statements were available to be issued. Examples include: the sale of a capital stock issue, purchase of a business, settlement of litigation, catastrophic loss, significant foreign exchange rate changes, loans to insiders or affiliates, and transactions not in the ordinary course of business.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 855
-URI http://asc.fasb.org/topic&trid=2122774

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