ACCRUED EXPENSES (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
ACCRUED EXPENSES
Accrued payroll related	$ 4,914	$ 5,040
Accrued employee benefits	2,985	2,023
Real estate and other taxes	1,244	982
Other accrued expenses	2,650	1,836
Total accrued expenses	$ 11,793	$ 9,881