Note 6 - Stock-based Compensation (Tables)

6 Months Ended

Jun. 30, 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						Six Months Ended
	June 30,						June 30,
	2015			2014			2015			2014
Stock-based compensation expense, gross	$	1,009		$	980		$	2,002		$	3,052
Income tax benefit at our statutory rate associated with stock-based compensation		(394	)		(382	)		(781	)		(1,190	)
Stock-based compensation expense, net	$	615		$	598		$	1,221		$	1,862

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

	Six Months Ended
	June 30, 2015					June 30, 2014
				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		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

	Six Months Ended
	June 30, 2015					June 30, 2014
				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:
Restricted stock - 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
Restricted stock - end of period		374,693		$	9.46		204,473		$	9.81

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

	Six Months Ended
	June 30, 2015				June 30, 2014
	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		274,746	$	1.99
Options granted		-	$	-		-	$	-
Options exercised		-	$	-		-	$	-
Options expired		-	$	-		-	$	-
Options forfeited		-	$	-		-	$	-
Options outstanding - end of period		274,746	$	1.99		274,746	$	1.99
Exercisable at end of period		206,064	$	1.99		137,376	$	1.99