Retirement Plans and Employee Stock Purchase Plans (Tables)

12 Months Ended

Dec. 31, 2012

Retirement Plans and Employee Stock Purchase Plans

Schedule of purchases made under the 2009 Employee Stock Purchase Plans

	Year Ended December 31,
	2012		2011		2010
Number of shares purchased		487,451		300,177		356,777
Average price of shares purchased	$	8.35	$	14.56	$	13.52