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Note 7 - Stockholders' Equity (Tables)

6 Months Ended

Dec. 31, 2016

Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block]

	Number of Shares			Weighted- Average Exercise Price		Weighted- Average Remaining Contractual Life		Aggregate Intrinsic Value

Outstanding at June 30, 2016		104,378		$	14.85

Granted		223,825		$	2.93
Forfeited		(3,835	)	$	16.15
Expired		(2,500	)	$	18.46

Outstanding at December 31, 2016		321,868		$	6.52		6.3	$	129

Vested and Expected to Vest at December 31, 2016		285,743		$	6.88		6.2	$	111

Exercisable at December 31, 2016		157,553		$	9.58		5.9	$	49

Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]

Expected life (years)	4.2
Risk-free interest rate	1.1	%
Expected volatility	102.7	%
Dividend yield	0	%

Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity [Table Text Block]

				Weighted Average
	Number of Shares			Grant Date Fair Value
Balance at June 30, 2016		63,566		$	14.96
Granted		98,417		$	4.97
Vested		(95,902	)	$	10.85
Forfeited		(933	)	$	26.37
Outstanding at December 31, 2016		65,148		$	5.26

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

	Number of Shares		Weighted- Average Exercise Price Per Share
Beginning balance		4,828,721	$	9.37
Warrants granted		--		--
Warrants canceled		--		--
Warrants exercised		--		--

Outstanding at December 31, 2016		4,828,721	$	9.37

Exercisable at December 31, 2016		4,130,192	$	9.60

- 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.

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