Shareholders' Equity (Tables)

6 Months Ended

Jun. 30, 2012

Shareholders' Equity [Abstract]

Summary Of Activities In Common Stock

	Six months ended June 30,
	2012			2011
	Shares	Amount		Shares	Amount
Purchases of common stock	-	$	-	(913)	$	(20,884)
Stock option exercises	267		2,359	312		1,416
Employee stock plan purchases	40		1,166	49		924