STOCK PLANS (Tables)

12 Months Ended

Dec. 31, 2012

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

Summary of stock option activity

The following table summarizes stock option activity for each of the three years ended December 31, 2012, under all Plans:

	Year Ended December 31,
	2012				2011				2010
	Options		Weighted Average Exercise Price		Options		Weighted Average Exercise Price		Options		Weighted Average Exercise Price
Balance at beginning of year	3,632,463		$	26.05	3,779,824		$	23.99	3,596,884		$	22.28
Options granted	412,980		47.66		459,263		35.34		491,010		31.29
Options exercised	(962,029	)	19.52		(572,795	)	19.82		(260,084	)	13.49
Options canceled	(22,470	)	24.07		(33,829	)	26.62		(47,986	)	27.84
Balance at end of year	3,060,944		30.98		3,632,463		26.05		3,779,824		23.99
Exercisable at end of year	2,208,455		27.19		2,677,071		23.73		2,749,168		22.40

Weighted average assumptions used for estimating fair value of options granted

The weighted average assumptions for each of the three years ended December 31, 2012 were as follows:

	Year Ended December 31,
	2012			2011			2010
Expected volatility	45.67		%	41.92		%	42.15		%
Dividend yield	1.66		%	1.63		%	2.02		%
Risk-free interest rate	0.70		%	0.80		%	1.64		%
Expected option life (years)	4.5			4.3			4.9
Weighted average fair value per option granted during the year	$	15.87		$	10.97		$	10.01

Summary of nonvested stock options

The following table summarizes non-vested stock options for the year ended December 31, 2012:

	Year Ended December 31, 2012
	Number of Options		Weighted Average Fair Value at Grant Date
Balance at beginning of year	929,382		$	10.78
Granted	412,980		15.87
Vested	(470,243	)	10.19
Forfeited	(19,630	)	19.60
Balance at end of year	852,489		13.63

Summary of information about awards outstanding, by exercise price range

The following table summarizes information about awards outstanding as of December 31, 2012:

	Outstanding			Exercisable
Exercise Price Range	Number of Stock Options	Weighted Average Exercise Price		Number of Stock Options	Weighted Average Exercise Price		Weighted Average Remaining Life (years)
Under $19.99	449,884	$	18.59	449,884	$	18.59	2.4
$20.00 - $32.99	1,389,730	27.79		1,284,025	27.50		6.5
Over $33.00	1,221,330	39.18		474,546	34.50		8.0
	3,060,944			2,208,455			6.5

Summary of restricted share award activity

The following table summarizes restricted share award activity for each of the three years ended December 31, 2012, under all Plans:

	Year Ended December 31,
	2012				2011				2010
	Shares		Weighted Average Grant Date Fair Value		Shares		Weighted Average Grant Date Fair Value		Shares		Weighted Average Grant Date Fair Value
Balance at beginning of year	379,233		$	28.06	523,730		$	27.36	435,770		$	26.61
Shares granted	20,099		47.81		22,779		35.55		112,864		31.05
Shares vested*	(62,524	)	32.10		(159,842	)	26.97		(24,904	)	31.07
Shares forfeited	—		—		(7,434	)	24.67		—		—
Balance at end of year	336,808		28.49		379,233		28.06		523,730		27.36

_______________________________________________________________________________

* Includes shares vested but not exercisable

Summary of nonvested restricted shares awards

The following table summarizes non-vested restricted share awards for the year ended December 31, 2012:

	Year Ended December 31, 2012
	Number of Restricted Shares		Weighted Average Fair Value at Grant Date
Balance at beginning of year	355,933		$	28.18
Granted	20,099		47.81
Vested	(57,944	)	31.93
Balance at end of year	318,088		28.74

Summary of restricted stock unit activity

The following table summarizes restricted stock unit activity for the years ended December 31, 2012 and 2011, under all Plans:

	Year Ended December 31,
	2012				2011
	Units		Weighted Average Grant Date Fair Value		Units	Weighted Average Grant Date Fair Value
Non-vested at beginning of year	166,519		$	34.55	—	$	—
Units granted	133,944		47.97		166,519	34.55
Units vested	(10,499	)	33.06		—	—
Units forfeited	(1,295	)	35.55		—	—
Non-vested at end of year	288,669		40.83		166,519	34.55