Stock Based Compensation (Tables)

9 Months Ended

Sep. 30, 2011

Share-based Compensation [Abstract]

Fair value of the restricted stock awards, restricted stock units and stock options

		Weighted-average
	Number	grant date		Aggregate		Vesting
	of shares	fair value		fair value		period
Common stock	28	$	32.54	$	920	-
Restricted stock awards	337		30.74		10,345	3-5 years
Restricted stock units	65		30.25		1,952	4 years
Stock options	291		8.42		2,450	1-5 years