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Note 14 - Stock-Based Compensation (Tables)

12 Months Ended

Dec. 31, 2012

Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Method Used

		Year Ended December 31,
		2012				2011				2010
Risk-free interest rate			0.28	%			2.02	%			1.88	%
Expected volatility			38.8	%			23.7	%			25.3	%
Expected life, in years			2.1				4.8				4.5
Expected dividend yield			2.91	%			3.62	%			3.55	%

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

		Number of Shares				Weighted Average Exercise Price				Aggregate Intrinsic Value
Options outstanding at January 1, 2010			385,305			$	44.78			$	−
Options granted			180,485				35.55				−
Options exercised			(72,149	)			36.69				−
Options cancelled			(21,314	)			32.01				−
Options outstanding at December 31, 2010			472,327				43.07				−
Options granted			1,264,719				46.58				−
Options exercised			(224,969	)			37.30				−
Options cancelled			(30,000	)			44.25				−
Options outstanding at December 31, 2011			1,482,077				46.92				−
Options granted			63,516				44.28				−
Options exercised			(295,371	)			45.41				−
Options cancelled			(115,620	)			50.99				−
Options outstanding at December 31, 2012			1,134,602			$	46.75			$	711,000

Options exercisable			197,602			$	47.03			$	402,000

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

Options Outstanding December 31, 2012		Exercise Prices					Weighted Average Exercise Price				Weighted Average Remaining Contractual Life in Years
28,800			$37.70				$	37.70				1.3
1,015,802		$44.80	-	$46.69			$	46.58				3.2
90,000			$51.50				$	51.50				0.3
1,134,602							$	46.75				3.0

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

Number of

Shares

Weighted

Average Grant Date Fair Value

Aggregate Intrinsic Value

Unvested restricted shares at January 1, 2010

–

$

–

–

Award shares granted

30,000

34.46

–

Award shares vested

–

–

–

Unvested restricted shares at December 31, 2010

30,000

34.46

–

Award shares granted

–

–

–

Award shares vested

6,000

34.46

–

Unvested restricted shares at December 31, 2011

24,000

34.46

–

Award shares granted

–

–

–

Award shares vested

6,000

34.46

–

Unvested restricted shares at December 31, 2012

18,000

$

34.46

$

226,000

Tabular disclosure of option exercise prices, by grouped ranges, including the upper and lower limits of the price range, the number of shares under option, weighted average exercise price and remaining contractual option terms.

+ References+ Details

For each plan, identification of the award pricing model or other valuation method used in calculating the weighted average fair values disclosed. The model is also used to calculate the compensation expense that is shown within the balance sheet, income statement, and cash flow. Examples of valuation techniques are lattice models (binomial model), closed-form models (Black-Scholes-Merton formula), and a Monte Carlo simulation technique. Fair value is the amount at which an asset or liability could be bought or incurred or sold or settled in a current transaction between willing parties, that is, other than in a forced or liquidation sale. May include disclosures about the assumptions underlying application of the method selected.

+ References+ Details