Note 8 - Common Stock (Tables)

9 Months Ended

Sep. 30, 2017

Schedule of Stockholders' Equity Note, Warrants or Rights [Table Text Block]

					Number of
					Shares
					Outstanding
	Exercisable	Expiration	Exercise		Under
Issuance Date	for	Date	Price		Warrants

September 2014	Common Shares	September 23, 2019	$	4.24		86,831
October 2014	Common Shares	October 13, 2019	$	4.24		29,000
November 2014	Common Shares	November 12, 2019	$	4.24		12,500
February 2015	Common Shares	February 17, 2025	$	4.00		75,697
March 2015	Common Shares	March 26, 2025	$	2.72		1,454
May 2015	Common Shares	May 12, 2025	$	4.24		36,229
May 2015	Common Shares	May 17, 2020	$	4.24		21,585
December 2015	Common Shares	December 16, 2025	$	5.60		26,875
April 2016	Common Shares	April 1, 2026	$	6.08		25,000
May 2016	Common Shares	May 11, 2021	$	7.74		5,000
June 2016	Common Shares	June 20, 2026	$	4.98		100,402
May 2017	Common Shares	May 25, 2027	$	9.50		222,049
						642,622

- Definition

Tabular disclosure of warrants or rights issued. Warrants and rights outstanding are derivative securities that give the holder the right to purchase securities (usually equity) from the issuer at a specific price within a certain time frame. Warrants are often included in a new debt issue to entice investors by a higher return potential. The main difference between warrants and call options is that warrants are issued and guaranteed by the company, whereas options are exchange instruments and are not issued by the company. Also, the lifetime of a warrant is often measured in years, while the lifetime of a typical option is measured in months. Disclose the title of issue of securities called for by warrants and rights outstanding, the aggregate amount of securities called for by warrants and rights outstanding, the date from which the warrants or rights are exercisable, and the price at which the warrant or right is exercisable.

+ References + Details