Stock-Based Compensation Plans (Tables)

12 Months Ended

Dec. 31, 2013

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

Stock-Based Compensation Expense

Total stock-based compensation expense was as follows:

	Year Ended December 31,
	2013		2012		2011
	(In thousands)
Employee:
Restricted stock and performance shares	$	7,269	$	7,046	$	5,856
Stock options		900		668		324
		8,169		7,714		6,180
Non-employee directors:
Restricted stock		710		671		679
Total stock-based compensation	$	8,879	$	8,385	$	6,859

Assumptions Used for the Black-Scholes Option-Pricing Model to Determine the Per Share Weighted Average Fair Value for Options Granted

The following table represents the assumptions used for the Black-Scholes option-pricing model to determine the per share weighted-average fair value for options granted for the three years ended December 31, 2013:

	2013			2012			2011
Expected life (years)		9.9			5.0			9.9
Risk-free interest rate		1.9	%		0.7	%		3.3	%
Expected volatility		44.3	%		48.2	%		48.0	%
Expected dividend yield		1.2	%		1.2	%		1.3	%

Stock Option Activity

The following table reports stock option activity during the three years ended December 31, 2013 and the intrinsic value as of December 31, 2013:

						Remaining
	Number of			Weighted-Average		Contractual
	Shares			Exercise Price ($)		Term		Intrinsic Value ($)
								(In thousands)
Outstanding at December 31, 2010		4,403,562			9.09
Granted		340,771			21.60
Canceled		(211,323	)		16.16
Exercised		(1,605,273	)		10.21
Outstanding at December 31, 2011		2,927,737			9.42
Granted		13,292			32.45
Canceled		—			—
Exercised		(1,511,207	)		5.64
Outstanding at December 31, 2012		1,429,822			13.62
Granted		51,597			41.75
Canceled		(4,348	)		33.84
Exercised		(256,622	)		12.33				10,723
Outstanding at December 31, 2013		1,220,449			15.01		4.0		63,369
Exercisable at December 31, 2013		1,023,337			12.68		3.4		55,515

Summary of Performance of Share Activity

The following table reports performance share activity for the three years ended December 31, 2013:

Performance year	2013		2012		2011
Share pay-out at plan, net of forfeitures of 14,563 for 2011		42,908		44,843		63,102
Actual share pay-out in following year		46,340		41,481		91,498
Fair value per share on grant date	$	35.98	$	30.64	$	21.56

Restricted Stock and Performance Share Activity

The following table reports restricted stock and performance share activity during the three years ended December 31, 2013:

				Weighted-Average
	Number of			Grant Date Fair
	Restricted Shares			Value
Outstanding at December 31, 2010		1,244,864		$	11.23
Granted		435,548
Performance share pay-out		130,552
Canceled		(279,081	)
Vested		(574,172	)
Outstanding at December 31, 2011		957,711		$	15.69
Granted		206,965
Performance share pay-out		91,498
Canceled		(7,390	)
Vested		(497,525	)
Outstanding at December 31, 2012		751,259		$	21.88
Granted		255,266
Performance share pay-out		41,481
Canceled		(93,358	)
Vested		(384,914	)
Outstanding at December 31, 2013		569,734		$	31.86