Stock Based Compensation (Tables)

6 Months Ended

Jun. 30, 2012

Summary of Restricted Stock Activity and Related Information

A summary of restricted stock activity and related information for the six months ended June 30, 2012 is presented below:

	Shares			Weighted- Average Grant-Date Fair Value
Nonvested at January 1, 2012		129,082		$	75.00
Granted		55,652		$	119.22
Vested		(58,461	)	$	66.15
Forfeited		(3,946	)	$	93.80
Nonvested at June 30, 2012		122,327		$	98.75