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CLAIMS LIABILITIES (Details) (USD $)
Dec. 31, 2012
Type of Expense [Line Items]  
Workers' compensation self-insured retention $ 500,000
Workers' compensation per occurrence excess policy 500,000
Line of Credit Facility [Line Items]  
Letter of credit outstanding for security for worker's compensation claims 1,101,000
Deposits in the form of certificates of deposits 300,000
Stop loss for self insurance for employee health claims per covered employee per year 275,000
Letter of Credit [Member]
  
Line of Credit Facility [Line Items]  
Letter of credit outstanding for security for worker's compensation claims 1,101,000
Truck Coverage [Member]
  
Type of Expense [Line Items]  
Per occurrence deductibles 2,500
Cargo Loss Coverage [Member]
  
Type of Expense [Line Items]  
Per occurrence deductibles 10,000
Auto Liability [Member]
  
Type of Expense [Line Items]  
Per occurrence deductibles $ 2,500