Shareholders' Equity (Tables)

6 Months Ended

Jun. 30, 2013

Shareholders' Equity [Abstract]

Summary Of Activities In Common Stock

	Six months ended June 30,
	2013			2012
	Shares	Amount		Shares	Amount
Stock option exercises	461	$	4,481	267	$	2,359
Employee stock plan purchases	35		1,634	40		1,166