Stock-Based Compensation Plans (Tables)

12 Months Ended

Dec. 31, 2014

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

Stock-Based Compensation Expense

Total stock-based compensation expense was as follows:

	Year Ended December 31,
		2014		2013		2012
	(In thousands)
Employee:
Restricted stock and performance shares	$	8,193	$	7,269	$	7,046
Stock options		676		900		668
		8,869		8,169		7,714
Non-employee directors:
Restricted stock		900		710		671
Total stock-based compensation	$	9,769	$	8,879	$	8,385

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, 2014:

	2014		2013		2012
Expected life (years)	5.0		9.9		5.0
Risk-free interest rate	1.7	%	1.9	%	0.7	%
Expected volatility	35.5	%	44.3	%	48.2	%
Expected dividend yield	1.0	%	1.2	%	1.2	%

Stock Option Activity

The following table reports stock option activity during the three years ended December 31, 2014 and the intrinsic value as of December 31, 2014:

Summary of Performance of Share Activity

The following table reports performance share activity for the three years ended December 31, 2014:

Performance year	2014		2013		2012
Share pay-out at plan		29,678		42,908		44,843
Actual share pay-out in following year		25,228		46,340		41,481
Fair value per share on grant date	$	63.07	$	35.98	$	30.64

Restricted Stock and Performance Share Activity

The following table reports restricted stock and performance share activity during the three years ended December 31, 2014:

				Weighted-Average
	Number of			Grant Date Fair
	Restricted Shares			Value
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
Granted		149,349
Performance share pay-out		46,340
Canceled		(43,185	)
Vested		(286,249	)
Outstanding at December 31, 2014		435,989		$	41.83