Note 19 - Stock-based Compensation (Tables)

12 Months Ended

Dec. 31, 2015

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

Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity [Table Text Block]

	Number of Restricted Stock Units			Weighted-Average Grant Date Fair Values
Outstanding on December 31, 2014		685,430		$	22.15
Granted		387,187		$	14.86
Vested		(237,957	)	$	21.73
Forfeited		(60,115	)	$	15.74
Outstanding on December 31, 2015		774,545		$	19.13

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

	Shares Under Option			Weighted Average Exercise Price Per Share		Weighted Average Remaining Contractual Life (Years)
Outstanding on December 31, 2014		781,321		$	22.56
Granted		783,476		$	15.31
Forfeited		(44,002	)	$	20.25
Outstanding on December 31, 2015		1,520,795		$	18.89		6.17
Exercisable on December 31, 2015		273,205		$	22.61		5.73
Expected to vest December 31, 2015		1,247,590		$	18.08		6.27

Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]

	For the Years Ended December 31,
	2015			2014
Weighted-average fair value of options granted		$5.94			$7.44
Weighted-average risk-free interest rate		1.46%			1.46%
Range of risk-free interest rates	1.26%	-	1.60%	1.39%	-	1.51%
Weighted-average expected option lives (years)		4.5			4.5
Expected option lives (years)		4.5			4.5
Weighted-average volatility		46%			39%
Range of expected volatilities	40%	-	49%	36%	-	42%
Weighted-average expected dividend yield		0.0%			0.0%