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EMPLOYEE BENEFIT PLAN (Detail Textuals) (USD $)
6 Months Ended
Jun. 30, 2012
Multiple Employer Retirement Income Plan
Jun. 30, 2012
Supplemental Retirement Plan ('SERP')
Dec. 31, 2011
Supplemental Retirement Plan ('SERP')
Defined Benefit Plan Disclosure [Line Items]      
Contributuion by employer for retirement income plan $ 3,828,000    
SERP assets   $ 8,431,000 $ 8,251,000