Note 7 - Stock-based Compensation (Tables)

12 Months Ended

Dec. 31, 2012

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

	Year Ended December 31, 2012
Expected term (in years)		6.3
Volatility		104.90	%
Risk-free interest rate		1.00	%
Dividend yield		0.00	%
Expected forfeitures		0.00	%

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

	Year Ended December 31,
	2012					2011					2010
	Number of Shares Underlying Options			Weighted Average Exercise Price		Number of Shares Underlying Options			Weighted Average Exercise Price		Number of Shares Underlying Options			Weighted Average Exercise Price
Common stock:
Options outstanding - beginning of period		1,002,350		$	7.50		1,004,750		$	7.51		1,476,491		$	8.28
Options granted		359,568			1.99		-			-		-			-
Options exercised		-			-		-			-		-			-
Options forfeited		(8,700	)		5.32		(2,400	)		8.61		(74,666	)		10.37
Options expired		(37,150	)		8.72		-			-		(397,075	)		9.84
Options outstanding - end of period		1,316,068		$	5.98		1,002,350		$	7.50		1,004,750		$	7.51
Options exercisable at end of period		956,500		$	7.48		1,002,350		$	7.50		1,004,750		$	7.51

Schedule of Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding [Table Text Block]

As of December 31, 2012
Number of Options Outstanding		Exercise Price Per Share		Remaining Contractual Life	Number of Options Outstanding That Are Exercisable		Exercise Price per Share of Options That Are Exercisable
				(in years)
	921,500	$	7.64	0.1		921,500	$	7.64
	25,000		3.61	0.4		25,000		3.61
	10,000		2.10	0.6		10,000		2.10
	359,568		1.99	8.3		-		-
	1,316,068					956,500

Schedule of Nonvested Restricted Stock Units Activity [Table Text Block]

	Year Ended December 31,
	2012					2011				2010
	Number of Shares			Weighted- Average Grant Date Fair Value Per Share		Number of Shares		Weighted- Average Grant Date Fair Value Per Share		Number of Shares		Weighted- Average Grant Date Fair Value Per Share
Restricted stock - common:
Outstanding - beginning of period		-		$	-		-	$	-		-	$	-
Granted		432,396			1.65		-		-		-		-
Vested		(432,396	)		1.65		-		-		-		-
Outstanding - end of period		-		$	-		-	$	-		-	$	-

	Year Ended December 31,
	2012					2011					2010
	Number of Shares			Weighted- Average Grant Date Fair Value Per Share		Number of Shares			Weighted- Grant Date Average Fair Value Per Share		Number of Shares			Weighted- Average Grant Date Fair Value Per Share
Restricted stock - common:
Outstanding - beginning of period		10,000		$	4.94		33,000		$	5.74		66,000		$	6.36
Granted		-			-		-			-		-			-
Vested		(10,000	)		4.94		(23,000	)		6.08		(33,000	)		6.97
Outstanding - end of period		-		$	-		10,000		$	4.94		33,000		$	5.74