Note 6 - Stock-based Compensation (Tables)

3 Months Ended

Mar. 31, 2015

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 March 31,
	2015			2014
Stock-based compensation expense, gross	$	993		$	2,071
Income tax benefit at our statutory rate associated with stock-based compensation		(387	)		(808	)
Stock-based compensation expense, net	$	606		$	1,263

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

	Three Months Ended
	March 31, 2015					March 31, 2014
				Weighted-					Weighted-
				Average					Average
	Number			Grant Date		Number			Grant Date
	of			Fair Value		of			Fair Value
	Shares			Per Share		Shares			Per Share
Restricted stock - common:
Outstanding - beginning of period		385,056		$	9.09		274,838		$	4.43
Granted		150,308		$	10.27		312,961		$	11.78
Vested		(197,858	)	$	9.16		(202,743	)	$	6.93
Outstanding - end of period		337,506		$	9.57		385,056		$	9.09

	Three Months Ended
	March 31, 2015					March 31, 2014
				Weighted-					Weighted-
				Average					Average
	Number			Grant Date		Number			Grant Date
	of			Fair Value		of			Fair Value
	Shares			Per Share		Shares			Per Share
Restricted stock - Class A common:
Outstanding - beginning of period		204,473		$	9.81		-		$	-
Granted		287,513		$	9.37		236,294		$	9.80
Vested		(117,293	)	$	9.85		(31,821	)	$	9.75
Outstanding - end of period		374,693		$	9.46		204,473		$	9.81

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

	Three Months Ended
	March 31, 2015				March 31, 2014
			Weighted-				Weighted-
	Number of		Average		Number of		Average
	Shares		Exercise		Shares		Exercise
	Underlying		Price		Underlying		Price
	Options		Per Share		Options		Per Share
Stock options - common:
Outstanding - beginning of period		274,746	$	1.99		274,746	$	1.99
Options exercised		-	$	-		-	$	-
Options expired		-	$	-		-	$	-
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