Equity Incentive Plans (Tables)

9 Months Ended

Sep. 30, 2013

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

Summary of the activity of stock option awards

The Company uses a Black-Scholes option valuation model to estimate the fair value of each option awarded. A summary of the activity of stock option awards issued and outstanding under Company plans is as follows for the nine months ended September 30, 2013:

	Shares		Wtd. Avg. Exercise Price		Wtd. Avg. Remaining Contractual Term (years)	Aggregate Intrinsic Value
	(in thousands)					(in thousands)
Options outstanding at December 31, 2012	1,198		$	18.92	6.85	$	11,090
Options granted	—		—
Options exercised	(293	)	$	16.85
Options forfeited/canceled/expired	(21	)	$	21.43
Options outstanding at September 30, 2013	884		$	19.68	6.65	$	11,994
Options vested and expected to vest at September 30, 2013	861		$	19.63	6.62	$	11,727
Options exercisable at September 30, 2013	545		$	18.92	6.17	$	7,819

Summary of the activity of restricted stock

A summary of the activity of restricted stock outstanding is as follows for the nine months ended September 30, 2013:

	Shares		Wtd. Avg. Grant  Date Fair Value
	(in thousands)
Restricted stock outstanding at December 31, 2012	670		$	18.14
Granted	345		37.40
Vested	(271	)	18.45
Forfeited/canceled	(8	)	34.88
Restricted stock outstanding at September 30, 2013	736		$	26.87