Shareholders' Equity (Tables)

3 Months Ended

Mar. 31, 2012

Shareholders' Equity [Abstract]

Summary Of Activities In Common Stock

	Three months ended March 31,
	2012			2011
	Shares	Amount		Shares	Amount
Purchases of common stock	-	$	-	(335)	$	(6,839)
Stock option exercises	93		924	78		343
Employee stock plan purchases	20		509	27		473