Retirement Plans and Employee Stock Purchase Plans (Tables)

12 Months Ended

Dec. 31, 2011

Retirement Plans and Employee Stock Purchase Plans

Schedule of purchases made under the 2010 and 1995 Employee Stock Purchase Plans

	Year Ended December 31,
	2011		2010		2009
Number of shares purchased		300,177		356,777		835,469
Average price of shares purchased	$	14.56	$	13.52	$	10.26