Share-Based Compensation Plans (Tables)

6 Months Ended

Jun. 30, 2011

Share-Based Compensation (Tables) [Abstract]

Issuance of new grants

							Grant date				Grant date fair
			Grant date fair				fair value of				value of
	Restricted		value of		Stock		stock		Performance		performance
Grant date	stock		restricted stock		options		options		shares		shares
January 3, 2011		188,673	$	27.45		121,017	$	17.89		70,188	$	42.81
March 8, 2011		1,509	$	34.79		2,562	$	22.82		1,509	$	55.12
May 9, 2011		5,853	$	26.98		10,059	$	17.59		5,853	$	42.08