Stock Compensation Plans (Tables)

9 Months Ended

12 Months Ended

Sep. 30, 2012

Dec. 31, 2011

Assumption Used to Estimate Fair Value of Option Granted

The fair value of each option grant is estimated on the date of grant using the Black-Scholes option-pricing model with the following weighted-average assumptions used:

Grant Year	Dividend Yield			Expected Volatility			Risk Free Interest  Rate			Expected Lives
2011		0	%		52	%		2	%		5
2010		0	%		54	%		2	%		5
2009		0	%		55	%		2	%		5

1996 Plan

Information regarding the 1996 Plan for the year ended December 31, 2011 is as follows:

	Shares			Weighted Average Exercise Price		Weighted Average Contractual Life
Outstanding, beginning of year		2,828,770		$	20.85
Granted		68,000			33.28
Exercised		(113,359	)		17.62
Canceled		(80,782	)		21.62
Outstanding, end of year		2,702,629		$	21.27		7.07
Exercisable at end of year		1,500,656		$	22.86		6.78

Summary of Non-Vested Stock Options

The following table summarizes our non-vested stock option activity for year ended December 31, 2011:

	Shares			Weighted Average Grant Date Fair Value
Non-vested stock options at the beginning of the period		1,832,153		$	9.20
Granted		54,400			9.33
Vested		(623,362	)		9.49
Canceled		(61,218	)		9.14
Non-vested stock options at the end of the period		1,201,973		$	9.06

Summary of ESPP Share Activity

The following is a summary of the 2009 ESPP share activity for the nine months ended September 30, 2012:

	Shares
Available for future purchases, January 1, 2012		253,294
Additional shares reserved under 2009 ESPP		250,000
Purchases		(110,014	)
Available for future purchases, September 30, 2012		393,280

The following is a summary of ESPP share activity for the year ended December 31, 2011:

	Shares
2009 ESPP Plan Shares available for future purchases, January 1, 2011		331,795
Additional Shares reserved under 2009 ESPP		77,928
Purchases		(156,429	)
Shares available for future purchases, December 31, 2011		253,294