Note 7 - Shareholders' Equity (Tables)

6 Months Ended

Jun. 30, 2013

Note 7 - Shareholders' Equity (Tables) [Line Items]

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

	Number of Shares			Weighted Average Exercise Price Per Share		Weighted Average Remaining Contractual Term (Years)	Aggregate Intrinsic Value
Shares under option at January 1, 2013		2,211,488		$	7.47
Options granted		153,000			3.49
Options exercised		(3,000	)		3.91
Options forfeited		(29,882	)		4.26
Options expired		(162,068	)		10.87
Shares under option at June 30, 2013		2,169,538		$	6.98	4.58	$	74
Vested and expected to vest as of June 30, 2013		1,958,735		$	7.22	4.53	$	56
Options exercisable at June 30, 2013		960,662		$	6.72	3.59	$	0

Schedule Of Share Based Compensation, Restricted Stock Units, Award Values [Table Text Block]

	Three Month  Period Ended June 30, 2013
Number of shares award		120,000
Weighted average fair value per share	$	3.62
Aggregate total value	$	434

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

	Number of Shares		Weighted Average Grant Date Fair Value
Unvested at January 1, 2013		0	$	0
Granted		120,000	$	3.62
Vested		0		0
Forfeited		0		0
Unvested at June 30, 2013		120,000	$	3.62

Employee Stock Option [Member]

Note 7 - Shareholders' Equity (Tables) [Line Items]

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

	Six Month Periods Ended
	June 30, 2013			July 1, 2012
Risk-free interest rate		0.68	%		0.59	%
Volatility factor		62.60	%		62.88	%
Dividends		0.00	%		0.00	%
Weighted average expected life (years)		4.06			3.91

Restricted Stock Units (RSUs) [Member]

Note 7 - Shareholders' Equity (Tables) [Line Items]

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

	Six Month Period Ended
	June 30, 2013
Risk-free interest rate		0.21	%
Volatility factor		59.08	%
Dividends		0.00	%