Stock-Based Compensation (Tables)

12 Months Ended

Dec. 31, 2013

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

Weighted-Average Assumptions

The fair value for options granted was estimated at the date of grant using a Black-Scholes option-pricing model with the following weighted-average assumptions (there were no options granted during the year ended December 31, 2013):

	Year Ended December 31,
	2012			2011
Weighted average fair value of options granted	$	11.77		$	13.26
Risk free interest rate		0.9	%		2.0	%
Dividend yield		0.0	%		0.0	%
Volatility factors of the expected market price of the Company’s common stock		63.0	%		61.0	%
Weighted-average expected life of options		5 Years			5 Years

Summary of Stock Option Activity

A summary of the Company’s stock option activity as of December 31, 2013, and changes during the year then ended, is presented below:

	Number of Shares			Option Price Per Share		Weighted Average Exercise Price		Aggregate Intrinsic Value (in thousands)
Outstanding at December 31, 2012		1,948,259		$	2.89 –$24.65	$	15.38
Cancelled/forfeited		(61,332	)		22.17 –24.65		23.03
Exercised		(753,755	)		2.89 –24.65		15.56
Outstanding at December 31, 2013		1,133,172		$	2.89 –$24.65	$	14.84	$	40,138
Exercisable at December 31, 2013		987,843		$	2.89 –$24.65	$	13.71	$	36,103

Summary of Restricted Stock Units

A summary of the status of the Company’s restricted stock units and restricted stock awards as of December 31, 2013, and changes during the year then ended, is presented below:

	Non-Vested Shares			Weighted Average Grant Date Fair Value
Non-vested at December 31, 2012		744,016		$	23.51
Awarded		645,266		$	35.03
Vested		(336,772	)	$	22.85
Cancelled/forfeited		(66,775	)	$	26.39
Non-vested at December 31, 2013		985,735		$	31.07