ACCRUED EXPENSES (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
Accrued Expenses [ABSTRACT]
Insurance	$ 22,602	$ 21,712
Interest	7,605	15,434
Accrued disposal costs	1,796	2,455
Accrued compensation and benefits	41,885	56,029
Income, real estate, sales and other taxes	24,568	14,863
Other	38,231	37,499
Total accrued expenses	$ 136,687	$ 147,992