CONTINGENCIES (Details) (USD $)	3 Months Ended
	Mar. 31, 2014	Dec. 31, 2013
Guarantor Obligations [Line Items]
Issued guaranties	$ 41,922,000
Guarantor obligations, term	All of these instruments have an expiration date within four years
Accrued liability	207,425,000	129,001,000
Insurance receivable	99,425,000
Insurance deductible	1,000,000
Insurance Claim [Member]
Guarantor Obligations [Line Items]
Accrued liability	100,425,000
Performance Bonds [Member]
Guarantor Obligations [Line Items]
Issued guaranties	33,642,000
Standby Letters Of Credit [Member]
Guarantor Obligations [Line Items]
Issued guaranties	$ 8,280,000