Note 14 - Stock-Based Compensation (Tables)

12 Months Ended

Dec. 31, 2013

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

Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table Text Block]

	Year Ended December 31,
	2013		2012		2011
	(Dollars in thousands)
Cost of revenues	$	3,971	$	4,225	$	4,325
Selling and marketing expenses		494		542		600
General and administrative expenses		1,799		1,611		1,747
Total stock-based compensation expense		6,264		6,378		6,672
Tax effect on stock-based compensation expense		783		797		834
Net effect of stock-based compensation expense	$	5,481	$	5,581	$	5,838

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

	Year Ended December 31,
	2013			2012			2010
For stock options issued by the Company:
Risk-free interest rates		0.8	%		1.0	%		2.2	%
Expected lives (in years)		4.6			5.0			5.1
Dividend yield		0.71	%		0.81	%		0.80	%
Expected volatility		37.8	%		47.2	%		46.4	%
Forfeiture rate		5.6	%		6.4	%		7.5	%

Schedule of Share-based Compensation, Stock Options and Stock Appreciation Rights Award Activity [Table Text Block]

	Year Ended December 31,
	2013					2012					2011
	Shares			Weighted Average Exercise Price		Shares			Weighted Average Exercise Price		Shares			Weighted Average Exercise Price
Outstanding at beginning of year		3,563		$	30.09		2,934		$	32.40		2,335		$	34.35
Granted, at fair value:
Stock Options		45			26.70		75			19.01		30			19.10
SARs*		1,270			23.08		602			20.13		622			25.65
Exercised		(39	)		16.89		—			—		—			—
Forfeited		(114	)		30.04		(48	)		28.92		(53	)		31.69
Expired		(15	)		37.90		—			—		—			—
Outstanding at end of year		4,710			28.23		3,563			30.09		2,934			32.40
Options and SARs exercisable at end of year		2,123			33.82		1,592			36.61		1,086			37.46
Weighted-average fair value of options and SARs granted during the year				$	6.66				$	7.25				$	9.69

Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range [Table Text Block]

		Options Outstanding						Options Exercisable
Exercise Price		Number of Shares Outstanding		Weighted Average Remaining Contractual Life in Years		Aggregate Intrinsic Value		Number of Shares Exercisable		Weighted Average Remaining Contractual Life in Years		Aggregate Intrinsic Value
						(Dollars in thousands)						(Dollars in thousands)
$	15.00		21		0.8	$	258		21		0.8	$	258
	18.56		45		5.8		389		45		5.8		389
	19.10		23		4.8		182		23		4.8		182
	19.69		26		5.6		197		26		5.6		197
	20.13		578		5.3		4,089		—		—		—
	20.54		120		5.3		800		—		—		—
	23.34		1,138		5.4		4,404		—		—		—
	25.65		578		4.3		901		144		4.3		225
	25.74		23		1.8		33		23		1.8		33
	26.70		45		6.8		23		—		—		—
	26.84		529		2.2		196		529		2.2		196
	28.19		30		3.8		—		30		3.8		—
	29.21		8		3.3		—		8		3.3		—
	29.95		547		3.3		—		273		3.3		—
	34.13		222		2.3		—		222		2.3		—
	38.50		23		2.8		—		23		2.8		—
	38.85		8		0.2		—		8		0.2		—
	42.08		329		0.3		—		329		0.3		—
	45.78		397		1.3		—		397		1.3		—
	52.98		23		0.8		—		23		0.8		—
			4,710		3.7	$	11,474		2,123		2.1	$	1,480

		Options Outstanding						Options Exercisable
Exercise Price		Number of Shares Outstanding		Weighted Average Remaining Contractual Life in Years		Aggregate Intrinsic Value		Number of Shares Exercisable		Weighted Average Remaining Contractual Life in Years		Aggregate Intrinsic Value
						(Dollars in thousands)						(Dollars in thousands)
$	15.00		32		1.8	$	136		32		1.8	$	136
	18.56		45		6.8		32		—		—		—
	19.10		30		5.8		5		30		5.8		5
	19.69		30		6.6		—		—		—		—
	20.10		8		1.8		—		8		1.8		—
	20.13		594		6.3		—		—		—		—
	25.65		598		5.3		—		—		—		—
	25.74		23		2.8		—		23		2.8		—
	26.84		552		3.2		—		276		3.2		—
	28.19		30		4.8		—		30		4.8		—
	29.21		8		4.3		—		8		4.3		—
	29.95		567		4.3		—		139		4.3		—
	34.13		225		3.3		—		225		3.3		—
	37.90		15		0.8		—		15		0.8		—
	38.50		23		3.8		—		23		3.8		—
	38.85		8		1.2		—		8		1.2		—
	42.08		340		1.3		—		340		1.3		—
	45.78		412		2.3		—		412		2.3		—
	52.98		23		1.8		—		23		1.8		—
			3,563		4.0	$	173		1,592		2.6	$	141