Shares Outstanding (tables)

Dec. 31, 2011

Disclosure Common Stock [Abstract]

Summary Of Common Stock Shares Issued And Outstanding Table [Text Block]

Thousands		Shares
Balance, December 31, 2008		26,501
	Sales to employees under ESPP	9
	Exercise of stock options under Restated SOP - net	23
Balance, December 31, 2009		26,533
	Sales to employees under ESPP	24
	Exercise of stock options under Restated SOP - net	111
Balance, December 31, 2010		26,668
	Sales to employees under ESPP	15
	Exercise of stock options under Restated SOP - net	24
	Sales to shareholders under DRPP	49
Balance, December 31, 2011		26,756