Stock-Based Compensation Plans (Tables)

3 Months Ended

Mar. 31, 2013

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

The following is a summary of restricted stock activity for the three months ended March 31, 2013:



(in thousands, except for per share amounts)	Shares		Weighted Average Grant Date Fair Value /Share
Outstanding at December 31, 2012	1,588		$	26.92
Granted	447		$	27.45
Vested	(209	)	$	30.00
Forfeited	(19	)	$	28.85
Outstanding at March 31, 2013	1,807		$	26.68

Schedule of Nonvested Performance-based Units Activity [Table Text Block]

The following is a summary of performance-based share grants for the three months ended March 31, 2013:



(in thousands, except for per share amounts)	Shares	Weighted Average Grant Date Fair Value /Share
Outstanding at December 31, 2012	—	$	—
Granted	119	$	27.49
Vested	—	$	—
Forfeited	—	$	—
Outstanding at March 31, 2013	119	$	27.49

Summary of the changes in outstanding stock options

The following is a summary of the changes in outstanding stock options for the three months ended March 31, 2013:



(in thousands, except for per share amounts)	Shares		Weighted Average Exercise Price /Share		Weighted Average Remaining Contractual Term (Years)
Outstanding at December 31, 2012	4,083		$	26.46	6.4
Granted	813		$	27.43	10.0
Exercised	(23	)	$	20.03	3.4
Forfeited	(176	)	$	29.52	0.1
Outstanding at March 31, 2013	4,697		$	26.54	7.3
Options exercisable at March 31, 2013	2,293		$	26.22	5.2

Weighted-average assumptions for annual March 2012 grants

The fair value of each option grant was estimated on the date of grant using the binomial lattice pricing model which incorporates multiple and variable assumptions over time, including assumptions such as employee exercise patterns, stock price volatility and changes in dividends. The following are weighted-average assumptions for our annual March grants in 2013.



Dividend yield	1.69%
Volatility	31.10%
Risk-free interest rate	1.27%
Expected term (in years)	6.6
Weighted-average fair value / share	$7.58