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Note 3 - Accounting Policies - Securities Excluded From Calculation of Diluted Earnings Per Share (Details) - shares shares in Thousands	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Employee Stock Option [Member]
Shares excluded (in shares)	12,514	11,966
Warrant [Member]
Shares excluded (in shares)	640	625
Convertible Debt Securities [Member]
Shares excluded (in shares)	8,224	7,749

X

- Definition

Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257

+ Details

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- Details

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- Details

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