DISCONTINUED OPERATIONS (Details) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Impairment of long-lived assets to be disposed of	$ 3,900,000
Revenues	0	351,445,000
Pretax income (loss)	(11,202,000)	8,040,000
Provision (benefit) for taxes on income	11,495,000	4,933,000
Discontinued operations, net of tax	(22,697,000)	3,107,000
Pretax gain on sale of discontinued operations		883,505,000
Provision for tax on gain on sale		285,510,000
Gain on sale of discontinued operations, net of tax		597,995,000
Discontinued operations, net of tax		601,102,000
Manufacturing [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Revenues	0	224,488,000
Pretax income (loss)	(7,599,000)	(8,583,000)
Provision (benefit) for taxes on income	15,751,000	1,507,000
Discontinued operations, net of tax	(23,350,000)	(10,090,000)
Pretax gain on sale of discontinued operations		670,614,000
Provision for tax on gain on sale		226,965,000
Gain on sale of discontinued operations, net of tax		443,649,000
Discontinued operations, net of tax		433,559,000
Drilling [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Revenues	0	126,957,000
Pretax income (loss)	(3,603,000)	16,623,000
Provision (benefit) for taxes on income	(4,256,000)	3,426,000
Discontinued operations, net of tax	653,000	13,197,000
Pretax gain on sale of discontinued operations		212,891,000
Provision for tax on gain on sale		58,545,000
Gain on sale of discontinued operations, net of tax		154,346,000
Discontinued operations, net of tax		$ 167,543,000