DISCONTINUED OPERATIONS (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Income Statement Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Gain (loss) on divestiture, net of taxes (1)	$ 0	$ (95)	$ 0	$ 18,316
Earnings (loss) from discontinued operations	0	(95)	0	21,375
Heat Treating [Member]
Income Statement Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Net sales		0		10,785
Earnings from discontinued operations before income taxes		0		4,929
Provision for income taxes		0		(1,870)
Gain (loss) on divestiture, net of taxes (1)		(95)		18,316	[1]
Earnings (loss) from discontinued operations		(95)		21,375
Year-to-date taxes				$ 11,114

[1] Net of year-to-date 2012 taxes of $11,114