Stock Plans (Tables)

12 Months Ended

Dec. 31, 2012

Stock Plans

Schedule of stock option activity for the period

	2012
	Shares			Weighted Average Exercise Price
Outstanding at beginning of year		2,484,844		$	17.79
Granted		235,000			10.06
Exercised		(38,005	)		7.09
Forfeited		(386,871	)		16.77
Expired		(114,732	)		19.84
Outstanding at end of year		2,180,236		$	17.13
Exercisable at end of year (vested)		1,482,505		$	16.92

Schedule of information about stock options outstanding, by range of exercise prices

The following table summarizes information about stock options outstanding at December 31, 2012:

	Options Outstanding						Options Exercisable
Range of Exercise Prices	Number Outstanding		Weighted Average Remaining Contractual Life (in years)		Weighted Average Exercise Price		Number Exercisable		Weighted Average Exercise Price
$5.00 - $12.49		575,697		5.71	$	8.41		338,478	$	7.65
$12.50 - $14.99		522,206		3.95		14.15		497,206		14.14
$15.00 - $24.99		827,111		7.61		20.41		466,465		20.57
$25.00 - $34.99		153,105		6.96		28.37		108,248		28.20
$35.00 - $100.00		102,117		6.57		38.05		72,108		39.11
		2,180,236		6.14	$	17.13		1,482,505	$	16.92

Assumptions used to estimate the fair value of stock options as of the date of grant

	2012			2011			2010
Number of options granted		235,000			226,341			358,000
Weighted average exercise price of options granted	$	10.06		$	20.45		$	26.09
Volatility(1)		60	%		60	%		58	%
Risk free interest rate(2)		1.4	%		1.7	%		2.3	%
Expected term (years)(3)		6.3			6.3			6.3
Expected annual dividends		None			None			None

(1)

Expected volatility is based on the historical volatility of our stock over a preceding period commensurate with the expected term of the award.

(2)

The risk free rate is based on the U.S. Treasury yield curve at the time of grant for periods consistent with the expected term of the option.

(3)

We use historical data to estimate the expected term of the awards.

Schedule of restricted stock activity

	2012
	Shares			Weighted Average Grant-Date Fair Value per Share
Nonvested shares at beginning of year		6,668		$	26.12
Granted		—			—
Forfeited		(1,334	)		19.07
Vested		(5,334	)		27.88
Nonvested shares at end of year		—		$	—

Schedule of restricted stock units (RSU) activity

	2012
	Shares			Weighted Average Grant-Date Fair Value per Share
Nonvested shares at beginning of year		149,340		$	32.83
Granted		1,590,567			12.60
Forfeited		(35,000	)		9.20
Vested and not yet issued		(284,674	)		19.19
Nonvested shares at end of year		1,420,233		$	13.49

Schedule of warrant activity

	2012				2011					2010
	Warrants		Weighted Average Exercise Price		Warrants			Weighted Average Exercise Price		Warrants			Weighted Average Exercise Price
Outstanding at beginning of year		—	$	—		1,898		$	474.24		688,170		$	11.68
Exercised		—		—		—			—		(678,187	)		10.09
Cancelled		—		—		(1,898	)		474.24		(8,085	)		36.36
Outstanding at end of year		—	$	—		—		$	—		1,898		$	474.24