Note 8 - Shareholders' Equity (Tables)

12 Months Ended

Dec. 31, 2013

Stockholders' Equity Note [Abstract]

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 Price			Number Outstanding at 12/31/2013 (in thousands)		Aggregate Intrinsic Value (in thousands)		Weighted Average Remaining Contractual Life (yrs)		Weighted Average Exercise Price		Number Exercisable at 12/31/2013 (in thousands)		Aggregate Intrinsic Value (in thousands)		Weighted Average Remaining Contractual Life (yrs)		Weighted Average Exercise Price
$40	–	45		355	$	4,557		8.6	$	44		44	$	591		5.1	$	43
45	–	50		616		5,375		4.0		48		443		3,564		2.4		48
50	–	55		880		4,232		3.8		52		801		3,786		3.5		52
55	–	60		227		—		6.0		57		227		—		6.0		57
$40	–	60		2,078	$	14,164		4.9		50		1,515	$	7,941		3.6		51

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

For the twelve months ended December 31,	2013			2012			2011
Expected volatility*1		17	%		21	%		18	%
Expected life in years*2		4.8			4.8			4.7
Risk-free interest rate*3		0.74	%		0.72	%		1.83	%
Expected dividend yield		3.57	%		3.20	%		3.14	%
Fair value per award	$	4.61		$	5.61		$	5.55

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

	Shares (In Thousands)			Weighted Average Exercise Price		Weighted Average Remaining Contractual Term (years)
Outstanding at January 1, 2013		2,328		$	49.53
Granted		322			43.71
Exercised		(478	)		44.98
Forfeited or expired		(94	)		49.80
Outstanding at December 31, 2013		2,078			49.66		4.9
Exercisable at December 31, 2013		1,515			51.25		3.6

Schedule of Nonvested Share Activity [Table Text Block]

	Shares (In Thousands)			Weighted Average Grant Date Fair Value
Nonvested at January 1, 2013		521
Granted		322
Vested		(254	)
Forfeited		(26	)
Nonvested at December 31, 2013		563		$	5.05

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

	2013			2012
Outstanding at January 1,		54			50
Granted		20			20
Issued upon vesting		(15	)		(15	)
Forfeited		—			(1	)
Outstanding at December 31,		59			54