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Note 8 - Earnings Per Share (EPS) - Securities Excluded From the Diluted Per Share Calculation (Details) - shares	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Exercise Price Less Than Average Market Price Of Common Shares [Member]
Antidilutive securities (in shares)	5,455,377	5,429,707	5,464,583	5,420,162
Exercise Price Less Than Average Market Price Of Common Shares [Member] | Preferred Stock [Member]
Antidilutive securities (in shares)	5,416,667	5,416,667	5,416,667	5,416,667
Exercise Price Less Than Average Market Price Of Common Shares [Member] | Employee Stock Option [Member]
Antidilutive securities (in shares)	35,706	13,040	44,580	3,495
Exercise Price Less Than Average Market Price Of Common Shares [Member] | Warrant [Member]
Antidilutive securities (in shares)	3,004		3,336
Exercise Price Greater Than Average Market Price Of Common Shares [Member]
Antidilutive securities (in shares)	1,430,924	1,919,629	1,430,924	1,934,212
Exercise Price Greater Than Average Market Price Of Common Shares [Member] | Employee Stock Option [Member]
Antidilutive securities (in shares)	218,761	215,000	218,761	229,583
Exercise Price Greater Than Average Market Price Of Common Shares [Member] | Warrant [Member]
Antidilutive securities (in shares)	1,212,163	1,704,629	1,212,163	1,704,629

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://www.xbrl.org/2003/role/presentationRef
-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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