Stockholders' Equity (Tables)

12 Months Ended

Dec. 31, 2013

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

Schedule of Stock Option Assumptions

	Twelve Months Ended December 31,
	2012	2011
Dividend yield	0%	0%
Expected volatility	61.2%	58.8%
Risk-free interest rate	0.8%	1.9%
Expected life of stock option awards (in years)	4.3	3.8
Weighted-average grant-date fair value	$15.71	$19.17

Stock option activity

The following table represents stock option award activity for the year ended December 31, 2013:

	2013
	Shares		Wtd. Avg. Exer. Price
Options outstanding, beginning of period	1,585,594		$	33.13
Options granted	—		$	—
Options canceled	(85,403	)	$	31.51
Options exercised	(11,877	)	$	13.84
Options outstanding, end of period	1,488,314		$	33.38
Options exercisable, end of period	1,201,971		$	32.93

Stock options outstanding

The following table summarizes information about stock option awards outstanding at December 31, 2013:

	Options Outstanding				Options Exercisable
Range of Exercise Prices	Number Outstanding at 12/31/13	Wtd. Avg. Remaining Contractual Life	Wtd. Avg. Exercise Price		Number Exercisable at 12/31/13	Wtd. Avg. Exercise Price
$8.00 to $24.99	430,730	5.2	$	20.04	430,730	$	20.04
$25.00 to $44.99	1,051,893	5.4	$	38.72	765,550	$	40.00
$45.00 to $65.00	5,691	1.3	$	55.98	5,691	$	55.98
$8.00 to $65.00	1,488,314	5.3	$	33.38	1,201,971	$	32.93

Schedule of RSA Activity

The following table represents restricted stock award activity for the year ended December 31, 2013:

	2013
	Shares		Wtd. Avg. Grant Price
Restricted shares outstanding, beginning of period	896,164		$	33.38
Restricted shares granted	869,430		$	14.86
Restricted shares canceled	(106,903	)	$	25.79
Restricted shares vested	(391,581	)	$	32.65
Restricted shares outstanding, end of period	1,267,110		$	21.54