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Note 8 - Stockholders' Equity (Tables)

12 Months Ended

Jun. 30, 2016

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

	2016					2015
	Number of Shares			Weighted- Average Exercise Price Per Share		Number of Shares			Weighted- Average Exercise Price Per Share
Beginning balance		252,620		$	44.18		255,671		$	44.18
Warrants granted		5,238,971		$	9.83		--			--
Warrants exercised (cashless)		(51,712	)	$	13.60		--			--
Warrants expired/canceled		(611,156	)	$	17.21		(3,051	)	$	43.00
Outstanding at June 30		4,828,723		$	9.37		252,620		$	44.18
Exercisable at June 30		600,782		$	19.02		252,620		$	44.18

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, 2015		147,609		$	25.51

Granted		55,875		$	9.64
Forfeited/cancelled		(93,855	)	$	27.02
Expired		(5,251	)	$	41.47
Exercised		--			--
Outstanding at June 30, 2016		104,378		$	14.85		5.8	$	--
Vested and Expected to Vest at June 30, 2016		91,810		$	15.34		5.7	$	--
Exercisable at June 30, 2016		61,271		$	16.15		5.5	$	--

Non Vested Stock Options Activity [Table Text Block]

	Non-vested Stock Options			Weighted-Average Grant Date Fair Value
Outstanding at June 30, 2015		89,198		$	13.07
Granted		55,875		$	5.75
Vested		(53,496	)	$	9.79
Forfeited		(48,470	)	$	13.35
Outstanding at June 30, 2016		43,107		$	7.66

Schedule of Assumptions Used [Table Text Block]

	2016			2015
Expected life (years)		5			5
Risk-free interest rate		1.5	%		1.5	%
Expected volatility		80	%		75	%
Dividend yield		0	%		0	%

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

	2016					2015
	Number of Shares			Weighted- Average Grant Date Fair Value		Number of Shares			Weighted- Average Grant Date Fair Value
Balance at June 30		72,589		$	22.40		40,190		$	38.00
Granted		10,000		$	2.98		54,850		$	16.60
Vested		(6,120	)	$	28.94		(18,828	)	$	36.40
Forfeited		(12,903	)	$	41.15		(3,623	)	$	35.40
Outstanding at June 30		63,566		$	14.96		72,589		$	22.40

- 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