Discontinued Operations (Combined Summary Results Of Operations For Discontinued Operations) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2012		Mar. 31, 2011
Discontinued Operations [Abstract]
Revenue	$ 5		$ 11,664
(Loss) income before income tax	(611)		3,723
Income tax (benefit) provision	(6,254)	[1]	1,283	[1]
Income from discontinued operations, net of tax	$ 5,643		$ 2,440

[1] Amount represents the difference between total consolidated income tax provision (benefit), calculated by applying the estimated full-year consolidated effective tax rate to earnings reported for the period, and the income tax provision (benefit) for continuing operations, calculated by applying the estimated full-year effective tax rate for continuing operations to pretax income from continuing operations for the period.