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Note 7 - Shareholders' Equity (Tables)

12 Months Ended

Dec. 31, 2012

Dec. 31, 2011

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

		Years Ended December 31,
		2012				2011
Risk-free interest rate			0.56	%			0.97	%
Volatility factor			63.53	%			61.62	%
Dividends			0.00	%			0.00	%
Weighted average expected life (years)			3.91				3.78
Forfeiture rate			15.00	%			15.00	%

		Year Ended
		December 31,
		2011
Risk-free interest rate			2.74	%
Volatility factor			63.78	%
Dividends			0.00	%
Weighted average expected life (years)			5.51
Forfeiture rate			0.00	%

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

Year Ended December 31, 2012
		Number of Shares				Weighted Average Exercise Price Per Share				Weighted Average Remaining Contractual Term				Aggregate Intrinsic Value
Shares under option at beginning of year			2,356,228			$	8.34
Options granted			303,150				3.63
Options exercised			(28,000	)			4.09
Options cancelled			(419,890	)			9.88
Shares under option at end of year			2,211,488			$	7.47				4.85			$	3
Vested and expected to vest as end of year			1,969,185			$	7.78				4.74			$	2
Options exercisable at end of year			1,013,098			$	7.64				3.45			$	0

Year Ended December 31, 2011
		Number of Shares				Weighted Average Exercise Price Per Share
Shares under option at beginning of year			1,794,694			$	9.71
Options granted			1,113,900				7.96
Options exercised			(18,500	)			3.94
Options cancelled			(533,866	)			12.30
Shares under option at end of year			2,356,228			$	8.34
Options exercisable at end of year			989,972			$	9.62

Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range [Table Text Block]

Options Outstanding														Options Exercisable
Range of Exercise Prices		Number of Outstanding at December 31, 2012				Weighted- Average Remaining Contractual Life				Weighted- Average Exercise Price				Number Exercisable at December 31, 2012				Weighted- Average Exercise Price
$  3.22-$  3.91			310,750				5.17			$	3.59				170,000			$	3.91
$  3.92-$  4.41			262,750				5.50			$	4.18				70,502			$	4.41
$  4.42-$  4.42			310,000				5.94			$	4.42				103,336			$	4.42
$  4.43-$  6.37			93,600				4.75			$	5.24				44,203			$	5.17
$  6.38-$  6.42			300,000				5.00			$	6.42				150,000			$	6.42
$  6.43-$  9.70			184,166				4.30			$	7.29				124,835			$	7.54
$  9.71-$12.00			419,722				3.63			$	10.62				219,722			$	11.19
$12.85-$12.96			69,000				0.38			$	12.93				69,000			$	12.93
$12.97-$13.48			61,500				2.15			$	13.34				61,500			$	13.34
$13.49-$15.00			200,000				7.04			$	15.00				-			$	0.00
$  3.22-$15.00			2,211,488				4.85			$	7.47				1,013,098			$	7.64

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

						Weighted Average
		Number of Shares				Grant Date Fair Value
Unvested at December 31, 2010			9,048			$	11.94
Granted			-				0.00
Vested			(4,925	)			12.01
Forfeited			(2,905	)			12.07
Unvested at December 31, 2011			1,218			$	11.33
Granted			-				0.00
Vested			(1,218	)			11.33
Forfeited			-				0.00
Unvested at December 31, 2012			-			$	0.00

X

- Definition

Tabular disclosure of the number and weighted-average grant date fair value for restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock units that were granted, vested, or forfeited during the year.

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