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Schedule I - Condensed Financial Information of Registrant - Condensed Statements of Income (Details 1) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Consolidated Statements of Income [Abstract]      
Selling, general and administrative expense $ 86,343 $ 89,720 $ 96,374
Operating loss 136,443 55,925 40,710
Interest expense 6,658 7,427 6,746
Losses (gain) on extinguishment of debt 136 52 (1,783)
Interest and other non-operating income, net   53 130
Income (loss) from continuing operations 83,984 29,715 21,849
Equity in earnings of affiliate (543) (1,003) (996)
Net loss from discontinued operations 142 141 265
Net income 83,842 29,574 21,584
Parent Company [Member]
      
Consolidated Statements of Income [Abstract]      
Fees under service, tax sharing and management agreements with subsidiaries 5,406 3,531 3,531
Selling, general and administrative expense 5,661 5,388 5,321
Other expense (income), net 453 (25) 82
Operating loss (708) (1,832) (1,872)
Interest expense 1,730 3,062 3,513
Losses (gain) on extinguishment of debt 0 52 (1,783)
Interest and other non-operating income, net (1,264) (973) (2,328)
Income (loss) from continuing operations (1,174) (3,973) (1,274)
Equity in earnings of affiliate 85,158 33,688 23,123
Net loss from discontinued operations (142) (141) (265)
Net income $ 83,842 $ 29,574 $ 21,584