DISCONTINUED OPERATIONS (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
Mar. 31, 2013	Mar. 31, 2012
Income Statement Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Gain (loss) on divestiture	$ 0	$ 18,411
Income (Loss) from Discontinued Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest	0	21,470
Heat Treating [Member]
Income Statement Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Disposal Group, Including Discontinued Operation, Revenue		10,785
Discontinued Operation, Income (Loss) from Discontinued Operation, before Income Tax		4,929
Discontinued Operation, Tax Effect of Discontinued Operation		(1,870)
Gain (loss) on divestiture		18,411
Income (Loss) from Discontinued Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest		21,470
Discontinued Operation, Tax Effect of Income (Loss) from Disposal of Discontinued Operation		$ 11,172

Amount of gain (loss), after tax expense or benefit and not previously recognized, resulting from the sale of a business component.

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Overall income (loss) from a disposal group that is classified as a component of the entity, before income tax, reported as a separate component of income before extraordinary items. Includes the following (before income tax): income (loss) from operations during the phase-out period, gain (loss) on disposal, provision (or any reversals of earlier provisions) for loss on disposal, and adjustments of a prior period gain (loss) on disposal.

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- Definition

Tax effect allocated to a disposal group that is classified as a component of the entity reported as a separate component of income before extraordinary items. Includes the tax effects of the following: income (loss) from operations during the phase-out period, gain (loss) on disposal, provision (or any reversals of earlier provisions) for loss on disposal, and adjustments of a prior period gain (loss) on disposal.

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- Definition

Amount of tax expense or benefit on gain (loss), not previously recognized, resulting from the sale of a business component.

+ References+ Details

- Definition

Amount of income (loss) from a disposal group, net of income tax before extraordinary items allocable to noncontrolling interests. Includes, net of tax, income (loss) from operations during the phase-out period, gain (loss) on disposal, provision (or any reversals of earlier provisions) for loss on disposal, and adjustments of a prior period gain (loss) on disposal.

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