ACCRUED EXPENSES (Details) (USD $) In Thousands	Sep. 30, 2011	Dec. 31, 2010
Accrued Expenses [ABSTRACT]
Insurance	$ 21,886	$ 19,736
Interest	5,222	7,826
Accrued disposal costs	2,238	2,173
Accrued compensation and benefits	47,277	44,545
Income, real estate, sales and other taxes	24,637	19,529
Other	37,651	22,280
Total accrued expenses	$ 138,911	$ 116,089