Note 5 - Stock-based Compensation (Tables)

6 Months Ended

Jun. 30, 2013

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

Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table Text Block]

	Three Months Ended						Six Months Ended
	June 30,						June 30,
	2013			2012			2013			2012
Stock-based compensation expense, gross	$	1,327		$	140		$	1,464		$	154
Income tax benefit at our statutory rate associated with stock-based compensation		(518	)		(55	)		(571	)		(60	)
Stock-based compensation expense, net	$	809		$	85		$	893		$	94

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

	Six Months Ended
	June 30, 2013					June 30, 2012
	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		-		-
Outstanding - end of period		274,838		$	4.43		432,396	$	1.65

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

	Six Months Ended
	June 30, 2013					June 30, 2012
	Number of Shares Underlying Options			Weighted- Average Exercise Price		Number of Shares Underlying Options			Weighted- Average Exercise Price
Stock options - common:
Outstanding - beginning of period		1,316,068		$	5.98		1,002,350		$	7.50
Options granted		-		$	-		359,568		$	1.99
Options exercised		(30,000	)	$	3.36		-		$	-
Options expired		(921,500	)	$	7.64		(32,150	)	$	8.61
Options forfeited		-		$	-		(1,500	)	$	7.64
Options outstanding - end of period		364,568		$	1.99		1,328,268		$	5.98
Exercisable at end of period		158,510		$	1.99		968,700		$	7.47