Special Cash Dividend And Stock Option Adjustments (Tables)

6 Months Ended

Jun. 30, 2012

Special Cash Dividend And Stock Option Adjustments [Abstract]

Summary Of The Adjustments To Options Outstanding

	Pre-Dividend Grant Terms		Post-Dividend Grant Terms
Year Granted	Number of Shares	ExercisePrice	Number of Shares	ExercisePrice
2006	262,418	$ 22.55	305,992	$ 19.34
2007	83,452	30.62	97,306	26.26
2008	171,792	21.85	200,318	18.74
2009	100,209	10.34	116,851	8.87
2010	608,278	26.21 – 29.23	709,309	22.48 – 25.07
2011	434,674	38.65 – 47.47	506,873	33.15 – 40.71
2012	403,750	50.38	470,805	43.21