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Discontinued Operations (Combined Summary Results Of Operations For Discontinued Operations) (Detail) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended 6 Months Ended
Jun. 30, 2012
Jun. 30, 2011
Jun. 30, 2012
Jun. 30, 2011
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]        
Revenue   $ 12,313 $ 5 $ 23,977
(Loss) income before income tax (782) 2,842 (1,393) 6,565
Income tax provision (benefit) 5,585 [1] 908 [1] (669) [1] 2,191 [1]
(LOSS) INCOME FROM DISCONTINUED OPERATIONS, net of tax $ (6,367) $ 1,934 $ (724) $ 4,374
[1] Amount represents the difference between the total consolidated income tax (benefit) provision, calculated by applying the estimated full-year consolidated effective tax rate to earnings/(losses) reported for the period, and the income tax (benefit) provision for continuing operations, calculated by applying the estimated full-year effective tax rate for continuing operations to pretax (loss) income from continuing operations for the period.