Note K - Accounting for Stock-Based Compensation (Tables)

12 Months Ended

Dec. 31, 2013

Note K - Accounting for Stock-Based Compensation (Tables) [Line Items]

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

	Shares			Weighted Average Exercise Price		Aggregate Intrinsic Value (in thousands)
Outstanding at January 1, 2011		392,369		$	19.32
Exercised		(39,487	)	$	12.11
Granted		190,552		$	21.77
Forfeited/Expired		(82,781	)	$	21.85
Outstanding at December 31, 2011		460,653		$	20.50
Exercised		(11,521	)	$	6.73
Granted		203,436		$	25.39
Forfeited/Expired		(13,768	)	$	24.58
Outstanding at December 31, 2012		638,800		$	22.21
Exercised		(159,309	)	$	19.48
Granted		218,707		$	27.03
Forfeited/Expired		(3,646	)	$	24.84
Outstanding at December 31, 2013		694,552		$	24.34	$	7,203
Vested plus expected to vest at December 31, 2013		678,431		$	24.29	$	7,069
Exercisable at December 31, 2013		291,251		$	22.35	$	3,600

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

			OPTIONS OUTSTANDING						OPTIONS EXERCISABLE
Range of Exercise Prices			Number Outstanding As of 12/31/13		Weighted Average Remaining Contractual Term		Weighted Average Exercise Price		Number Exercisable As of 12/31/13		Weighted Average Exercise Price
$ 9.05	–	$25.00		306,472		6.20	$	21.70		241,765	$	21.67
$25.01	–	$27.00		169,373		8.21	$	25.66		49,486	$	25.66
$27.01	–	$28.00		218,707		9.21	$	27.03		—	$	—
$ 9.05	to	$28.00		694,552		7.64	$	24.34		291,251	$	22.35

Restricted Stock [Member]

Note K - Accounting for Stock-Based Compensation (Tables) [Line Items]

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

	Number of Shares			Weighted- Average Grant Date Fair Value
Non-vested restricted stock awards at January 1, 2011		3,396		$	21.19
Granted		48,356		$	24.32
Vested		(17,088	)	$	23.87
Non-vested restricted stock awards at December 31, 2011		34,664		$	24.23
Granted		36,139		$	22.41
Vested		(34,664	)	$	24.23
Non-vested restricted stock awards at December 31, 2012		36,139		$	22.41
Granted		5,133		$	35.06
Vested		(35,958	)	$	24.19
Forfeited		(5,314	)	$	22.58
Non-vested restricted stock awards at December 31, 2013		—		$	—

Restricted Stock Units (RSUs) [Member]

Note K - Accounting for Stock-Based Compensation (Tables) [Line Items]

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

	Number of Shares			Weighted- Average Grant Date Fair Value		Aggregate Intrinsic Value (in thousands)
Non-vested RSUs at January 1, 2011		653,324		$	25.05
Granted		350,375		$	21.69
Vested		(176,251	)	$	22.56
Cancelled		(58,429	)	$	24.01
Non-vested RSUs at December 31, 2011		769,019		$	23.67
Granted		374,868		$	25.42
Vested		(230,632	)	$	24.66
Cancelled		(64,664	)	$	24.24
Non-vested RSUs at December 31, 2012		848,591		$	24.32
Granted		229,574		$	27.02
Vested		(288,258	)	$	24.28
Cancelled		(33,719	)	$	24.86
Non-vested RSUs at December 31, 2013		756,188		$	25.13	$	26,247
Restricted stock units expected to vest in the future		718,858		$	25.13	$	24,952

Cash Settled RSUs [Member]

Note K - Accounting for Stock-Based Compensation (Tables) [Line Items]

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

	Shares			Weighted- Average Grant Date Fair Value		Aggregate Intrinsic Value (in thousands)
Non-vested CSRSUs at December 31, 2012		—		$	—
Granted		203,115		$	27.84
Cancelled		(2,816	)	$	27.03
Non-vested CSRSUs at December 31, 2013		200,299		$	28.23	$	6,952
CSRSUs expected to vest in the future		187,760		$	28.30	$	6,517