Shareholders' Equity (Tables)

9 Months Ended

Sep. 30, 2013

Shareholders' Equity [Abstract]

Summary Of Activities In Common Stock

	Nine months ended September 30,
	2013			2012
	Shares	Amount		Shares	Amount
Stock option exercises	850	$	9,401	506	$	5,572
Employee stock plan purchases	50		2,535	59		1,832