Summary of Total Assets (Detail) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	$ 1,500,343	$ 1,505,545
Operating Segments | Titanium Segment
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	629,929	604,123
Operating Segments | Engineered Products and Services Segment
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	605,271	585,867
Corporate, Non-Segment
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	263,683	310,281
Discontinued Operations
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	$ 1,460	$ 5,274