XML 25 R47.htm IDEA: XBRL DOCUMENT v2.4.0.6
Investment in Kronos Worldwide, Inc. - Selected Financial Information of Kronos Income Statement (Detail) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended
Mar. 31, 2013
Mar. 31, 2012
Schedule of Equity Method Investments [Line Items]    
Net sales $ 21,453 $ 20,428
Cost of sales 15,433 14,416
Income (loss) from operations (2,853) (13,459)
Net income (loss) (1,998) 21,247
Kronos [Member]
    
Schedule of Equity Method Investments [Line Items]    
Net sales 463,600 561,300
Cost of sales 459,700 299,800
Income (loss) from operations (46,900) 209,400
Net income (loss) $ (41,100) $ 136,900