Note 7 - Stock-based Compensation (Tables)

9 Months Ended

Sep. 30, 2015

Notes Tables

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,
	2015			2014			2015			2014
Stock-based compensation expense, gross	$	1,009		$	981		$	3,011		$	4,032
Income tax benefit at our statutory rate associated with stock-based compensation		(394	)		(383	)		(1,174	)		(1,572	)
Stock-based compensation expense, net	$	615		$	598		$	1,837		$	2,460

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

	Nine Months Ended
	September 30, 2015					September 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

	Nine Months Ended
	September 30, 2015					September 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:
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