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EMPLOYEE BENEFIT PLANS- Net Periodic Benefit Cost (Credit) And Related Components (Details) (Multiple Employer Pension Plan, USD $)
In Thousands, unless otherwise specified
3 Months Ended 6 Months Ended
Jun. 30, 2012
Jun. 30, 2011
Jun. 30, 2012
Jun. 30, 2011
Multiple Employer Pension Plan
       
Multiemployer Plans [Line Items]        
Interest cost $ 64 $ 66 $ 127 $ 133
Expected return on plan assets (83) (80) (165) (161)
Amortization of net losses 16 10 31 19
Net periodic benefit $ (3) $ (4) $ (7) $ (9)