DISCONTINUED OPERATIONS (Detail) (USD $)	3 Months Ended		9 Months Ended		3 Months Ended	9 Months Ended		12 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2012 Heat Treating [Member]	Sep. 30, 2012 Heat Treating [Member]		Dec. 31, 2012 Heat Treating [Member]
Income Statement Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Net sales					$ 0	$ 10,785,000
Earnings from discontinued operations before income taxes					0	4,929,000
Provision for income taxes					0	(1,870,000)
Gain (loss) on divestiture, net of taxes (1)	0	(144,000)	0	18,172,000	(144,000)	18,172,000	[1]
Earnings (loss) from discontinued operations	0	(144,000)	0	21,231,000	(144,000)	21,231,000
Year-to-date taxes								$ 11,000,000

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