Note 6 - Stock-based Compensation (Tables)

9 Months Ended

Sep. 30, 2014

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						Nine Months Ended
	September 30,						September 30,
	2014			2013			2014			2013
Stock-based compensation expense, gross	$	981		$	255		$	4,032		$	1,719
Income tax benefit at our statutory rate associated with stock-based compensation		(383	)		(99	)		(1,572	)		(670	)
Stock-based compensation expense, net	$	598		$	156		$	2,460		$	1,049

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

	Nine Months Ended
	September 30, 2014					September 30, 2013
				Weighted-					Weighted-
				average					average
				Grant Date					Grant Date
	Number of			Fair Value		Number of			Fair Value
	Shares			Per Share		Shares			Per Share
Restricted stock - common:
Outstanding - beginning of period		274,838		$	4.43		-		$	-
Granted		312,961		$	11.78		382,062		$	5.20
Vested		(202,743	)	$	6.93		(107,224	)	$	7.16
Outstanding - end of period		385,056		$	9.09		274,838		$	4.43

	Nine Months Ended
	September 30, 2014					September 30, 2013
				Weighted-average				Weighted-average
				Grant Date				Grant Date
	Number of			Fair Value		Number of		Fair Value
	Shares			Per Share		Shares		Per Share
Restricted stock - class A common:
Outstanding - beginning of period		-		$	-		-	$	-
Granted		236,294		$	9.80		-	$	-
Vested		(31,821	)	$	9.75		-	$	-
Outstanding - end of period		204,473		$	9.81		-	$	-

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

	Nine Months Ended
	September 30, 2014				September 30, 2013
	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		274,746	$	1.99		1,316,068		$	5.98
Options granted		-	$	-		-		$	-
Options exercised		-	$	-		(119,822	)	$	2.34
Options expired		-	$	-		(921,500	)	$	7.64
Options forfeited		-	$	-		-		$	-
Options outstanding - end of period		274,746	$	1.99		274,746		$	1.99
Exercisable at end of period		137,376	$	1.99		68,688		$	1.99