Note 7 - Stock-based Compensation (Tables)

12 Months Ended

Dec. 31, 2013

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

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

	Year Ended December 31,
	2013					2012					2011
	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		1,316,068		$	5.98		1,002,350		$	7.50		1,004,750		$	7.51
Options granted		-			-		359,568			1.99		-			-
Options exercised		(119,822	)		2.34		-			-		-			-
Options forfeited		-			-		(8,700	)		5.32		(2,400	)		8.61
Options expired		(921,500	)		7.64		(37,150	)		8.72		-			-
Options outstanding - end of period		274,746		$	1.99		1,316,068		$	5.98		1,002,350		$	7.50
Options exercisable at end of period		68,688		$	1.99		956,500		$	7.48		1,002,350		$	7.50

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, 2013
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)
	274,746	$	1.99		7.3		68,688	$	1.99
	274,746						68,688

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

	Year Ended December 31,
	2013					2012					2011
	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		382,062			5.20		432,396			1.65		-		-
Vested		(107,224	)		7.16		(432,396	)		1.65		-		-
Outstanding - end of period		274,838		$	4.43		-		$	-		-	$	-

	Year Ended December 31,
	2013				2012					2011
	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		-	$	-		10,000		$	4.94		33,000		$	5.74
Granted		-		-		-			-		-			-
Vested		-		-		(10,000	)		4.94		(23,000	)		6.08
Outstanding - end of period		-	$	-		-		$	-		10,000		$	4.94